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<channel>
    <title>Mojang Studios Jira</title>
    <link>https://bugs.mojang.com</link>
    <description>This file is an XML representation of an issue</description>
    <language>en</language>    <build-info>
        <version>9.12.2</version>
        <build-number>9120002</build-number>
        <build-date>10-01-2024</build-date>
    </build-info>


<item>
            <title>[MC-4061] Entity Mass Spawning near chunk error</title>
                <link>https://bugs.mojang.com/browse/MC-4061</link>
                <project id="10400" key="MC">Minecraft: Java Edition</project>
                    <description>&lt;p&gt;In SMP, there are certain chunks that suddenly duplicate/spawn in entities like animals. One case we had 2000 sheep split into 5 chunks (right by each other). A different case we have unknown entities that showed a count of 5000. This is causing huge amount of FPS drop. And in the worst case scenario server crashes.&lt;/p&gt;

&lt;p&gt;I do not know how you can re-create this.&lt;/p&gt;</description>
                <environment></environment>
        <key id="16386">MC-4061</key>
            <summary>Entity Mass Spawning near chunk error</summary>
                <type id="1" iconUrl="https://bugs.mojang.com/secure/viewavatar?size=xsmall&amp;avatarId=18903&amp;avatarType=issuetype">Bug</type>
                                    <status id="5" iconUrl="https://bugs.mojang.com/images/icons/statuses/resolved.png" description="A resolution has been taken, and it is awaiting verification by reporter. From here issues are either reopened, or are closed.">Resolved</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="1">Fixed</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="decicus">Alex Thomassen</reporter>
                        <labels>
                            <label>crash</label>
                            <label>mob</label>
                            <label>multiplayer</label>
                            <label>server</label>
                            <label>smp</label>
                            <label>spawning</label>
                    </labels>
                <created>Sun, 2 Dec 2012 03:12:47 +0100</created>
                <updated>Thu, 5 Sep 2024 19:04:15 +0200</updated>
                            <resolved>Thu, 5 Sep 2024 19:04:15 +0200</resolved>
                                    <version>Minecraft 1.4.5</version>
                    <version>Minecraft 1.4.7</version>
                    <version>Snapshot 13w05b</version>
                    <version>Snapshot 13w06a</version>
                    <version>Minecraft 1.5</version>
                    <version>Minecraft 1.6.1</version>
                    <version>Minecraft 1.6.2</version>
                    <version>Minecraft 1.7.2</version>
                    <version>Minecraft 1.7.4</version>
                    <version>Minecraft 1.7.7</version>
                    <version>Minecraft 1.7.9</version>
                                    <fixVersion>Minecraft 1.8.1-pre1</fixVersion>
                                                        <votes>20</votes>
                                    <watches>12</watches>
                                                                            <comments>
                            <comment id="205080" author="galaxy_2alex" created="Fri, 24 Oct 2014 23:40:00 +0200"  >&lt;p&gt;Is this still a concern in the &lt;em&gt;current Minecraft version&lt;/em&gt;? If so, please &lt;em&gt;update the affected versions&lt;/em&gt; in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases. If this has been done, we can reopen the issue.&lt;/p&gt;

&lt;p&gt;Keep in mind that the &quot;Resolved&quot;-Status on this ticket just means &quot;Answered&quot;, and that we are waiting for further information on whether this issue still exists or not. It will be reopened as soon as the requested information has been delivered.&lt;/p&gt;
</comment>
                            <comment id="156253" author="tomahawk" created="Wed, 7 May 2014 20:58:21 +0200"  >&lt;p&gt;Region-fixer reports a chunk in the wrong location, but no other problems:&lt;/p&gt;
&lt;div class=&quot;preformatted panel&quot; style=&quot;border-width: 1px;&quot;&gt;&lt;div class=&quot;preformattedContent panelContent&quot;&gt;
&lt;pre&gt;Welcome to Region Fixer!
(version: 0.1.3)

############################################################
##############  Scanning world: PumpkinPies  ###############
############################################################

Scanning directory...
There are 11 region files in the world directory.

-------------------- Checking level.dat --------------------
&apos;level.dat&apos; is readable

------------------ Checking player files -------------------
Info: No player files to scan.

------------------ Scanning the Overworld ------------------
Scanning: 11 / 11 100% [###########################################################################################################################] Time: 00:00:29

Chunk problems:
-------------------------------------------------------------------
| Problem | Corrupted  Wrong l.  Etities  Shared o.  Total chunks |
-------------------------------------------------------------------
| Counts  |     0         1         1         0          4938     |
-------------------------------------------------------------------

Region problems:
No problems found.
&lt;/pre&gt;
&lt;/div&gt;&lt;/div&gt;</comment>
                            <comment id="156236" author="tomahawk" created="Wed, 7 May 2014 20:22:22 +0200"  >&lt;p&gt;Here&apos;s the rest of the save, just copy the region files I uploaded previously back to the region folder. &lt;br/&gt;
This world was working fine, then I noticed some lag and walked (in the game) around a hill to find a huge bunch of sheep and chickens had spawned. I quit and saved and now I can&apos;t play the world due to the lag and lack of chunks. It also takes a very long time for the world to open and the nearby chunks to appear...pressure plates don&apos;t work and it&apos;s pretty much unplayable. This has happened twice with this world (once in the original and again after I loaded a back up from a previous day).&lt;br/&gt;
I tried running region-fixer.py on it but it didn&apos;t help. Same result with MCEdit&apos;s region repair command.&lt;/p&gt;</comment>
                            <comment id="156234" author="tomahawk" created="Wed, 7 May 2014 20:15:29 +0200"  >&lt;p&gt;The final 2 region files from the corrupted Pumpkin Pie world (see my comment).&lt;/p&gt;</comment>
                            <comment id="156233" author="tomahawk" created="Wed, 7 May 2014 20:13:37 +0200"  >&lt;p&gt;Attaching region files separately since they are totally over 10 MB. Will upload the rest of the world from Saves after.&lt;br/&gt;
World name is Pumpkin Pie, or PumpkinPies in the UI.&lt;/p&gt;</comment>
                            <comment id="156226" author="tomahawk" created="Wed, 7 May 2014 19:57:29 +0200"  >&lt;p&gt;I&apos;m having this mass sheep spawning bug along with something like &lt;a href=&quot;https://bugs.mojang.com/browse/MC-2545&quot; title=&quot;Persistent Chunk error / Corrupted world / Wrong location spam&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-2545&quot;&gt;&lt;del&gt;MC-2545&lt;/del&gt;&lt;/a&gt; since I updated to 1.7.9 on my Mac running OSX Mavericks. It seems to happen regularly in a particular world, sometimes crashing the game and causing the world to be unplayable. I luckily have backups.&lt;/p&gt;</comment>
                            <comment id="155395" author="djm670" created="Sun, 4 May 2014 17:20:41 +0200"  >&lt;p&gt;UPDATE: in minecraft, im stuck with 2 holes!!!!! at first, i had one but now 2!!!!! PLEASE FIX IT BEFORE MY WORLD COMPLETELY FALLS APART!!! You wouldn&apos;t believe how much work is on there!&lt;/p&gt;</comment>
                            <comment id="151245" author="djm670" created="Tue, 15 Apr 2014 17:07:19 +0200"  >&lt;p&gt;I have the same exact problem. I uploaded some of my pics about the problem for you all. Also, every time, minecraft crashes 2 min after playing. while it works, it just sits there&lt;/p&gt;</comment>
                            <comment id="139422" author="greeny1994" created="Sun, 9 Feb 2014 20:34:21 +0100"  >&lt;p&gt;Same issue on 1.7.4 too, twice on the same server world&lt;/p&gt;</comment>
                            <comment id="136520" author="decicus" created="Thu, 30 Jan 2014 20:51:19 +0100"  >&lt;p&gt;I have uploaded the world download here: Link removed (broken)&lt;br/&gt;
It&apos;s around 600 mb. I&apos;m not entirely sure of the location where the spawn happened, but it shouldn&apos;t be more than around 500 blocks from spawn (give or take).&lt;/p&gt;</comment>
                            <comment id="136168" author="decicus" created="Wed, 29 Jan 2014 18:07:48 +0100"  >&lt;p&gt;I cannot confirm if this issue still persists in 14w04b. However, I have a world that seems to have the same issue in 1.7.4. I will have to upload this, which can take some time. I will keep you posted about the world download.&lt;/p&gt;</comment>
                            <comment id="136155" author="ezekielelin" created="Wed, 29 Jan 2014 17:55:57 +0100"  >&lt;p&gt;Is this still a concern in the latest Minecraft version &lt;b&gt;14w04b&lt;/b&gt;? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.&lt;/p&gt;</comment>
                            <comment id="116327" author="abcdefg182" created="Mon, 28 Oct 2013 19:23:49 +0100"  >&lt;p&gt;I have a bad chunk in the nether and sometimes when entering the dimension zombie pigman start raining inside the chunk, FPS drop to 2, all normal mobs (outside the chunk error) freeze and minecarts/buttons/etc. became unusable, after a few minutes the game crashes and, upon reloading, everything is back to normal with the empty chunk but no zombie pigman rain. &lt;br/&gt;
I&apos;ve seen it in 1.6.2 and 1.7.2, here&apos;s a screenshot.&lt;/p&gt;</comment>
                            <comment id="107982" author="decicus" created="Mon, 30 Sep 2013 20:29:32 +0200"  >&lt;p&gt;Aaron, I believe we tried that, but with no luck. Although, it&apos;s a while ago, so I&apos;m not really sure about that.&lt;/p&gt;</comment>
                            <comment id="107975" author="phrat" created="Mon, 30 Sep 2013 20:14:01 +0200"  >&lt;p&gt;So can this be fixed by using MCEdit and finding the chunk error then deleting it?&lt;/p&gt;</comment>
                            <comment id="99901" author="agrastios" created="Thu, 22 Aug 2013 15:13:27 +0200"  >&lt;p&gt;Here&apos;s my world:&lt;a href=&quot;http://www.mediafire.com/download/j8sl6687xo4xg8s/Rauliux_Villager_Corrupted.rar&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://www.mediafire.com/download/j8sl6687xo4xg8s/Rauliux_Villager_Corrupted.rar&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="98143" author="grave" created="Sun, 11 Aug 2013 08:00:38 +0200"  >&lt;p&gt;Still exists in the most recent 1.6.2 and launcher.&lt;/p&gt;</comment>
                            <comment id="96679" author="agrastios" created="Fri, 2 Aug 2013 12:36:25 +0200"  >&lt;p&gt;Happened to me in a worst case,when loading a world it freeze.I written more information in &lt;a href=&quot;https://bugs.mojang.com/browse/MC-2545&quot; title=&quot;Persistent Chunk error / Corrupted world / Wrong location spam&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-2545&quot;&gt;&lt;del&gt;MC-2545&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="95730" author="moosehb77" created="Tue, 30 Jul 2013 19:12:34 +0200"  >&lt;p&gt;I have a world to upload, but I am unsure how to do that.  The folder size for my world is about 90-100 MB.&lt;/p&gt;

&lt;p&gt;Let me know how I can get you a copy, and I will do it.  I may need to find a place to access it online.&lt;/p&gt;

&lt;p&gt;EDIT: The location to find the folder with all world data for the affected world, is &lt;a href=&quot;http://www.math.uiowa.edu/MathTutorialLab/oldpage/JIRA/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://www.math.uiowa.edu/MathTutorialLab/oldpage/JIRA/&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;You will find a folder called Moose Town, that is the world name.&lt;/p&gt;</comment>
                            <comment id="95724" author="moosehb77" created="Tue, 30 Jul 2013 19:07:14 +0200"  >&lt;p&gt;I reported another bug about a chunk reverting to a previous saved configuration, after making changes to the chunk, and I think that may be related to this issue, because I went into MCEdit to look at the chunk where the sheep were spamspawning, and the chunk that wouldn&apos;t load in game, did not appear as the unloaded chunk but appeared as the chunk that kept reverting to previous condition on me.  The reverting chunk is a few chunks away.&lt;/p&gt;

&lt;p&gt;I will find the other open issue &lt;a href=&quot;https://bugs.mojang.com/browse/MC-4001&quot; title=&quot;Chunk reverts to an earlier state&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-4001&quot;&gt;&lt;del&gt;MC-4001&lt;/del&gt;&lt;/a&gt;, and also attempt to upload the roughly 90 MB in the folder of the affected world.&lt;/p&gt;

&lt;p&gt;Tails was Mod on &lt;a href=&quot;https://bugs.mojang.com/browse/MC-4001&quot; title=&quot;Chunk reverts to an earlier state&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-4001&quot;&gt;&lt;del&gt;MC-4001&lt;/del&gt;&lt;/a&gt;.  Again, I think my spamspawn issue is symptomatic of the chunk error in &lt;a href=&quot;https://bugs.mojang.com/browse/MC-4001&quot; title=&quot;Chunk reverts to an earlier state&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-4001&quot;&gt;&lt;del&gt;MC-4001&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;</comment>
                            <comment id="93827" author="kumasasa" created="Tue, 23 Jul 2013 04:11:12 +0200"  >&lt;p&gt;@Mike Hultquist:&lt;br/&gt;
After deleting several thousands of sheep with MCEdit that world was usable. Besides your &quot;sheep farm&quot; there is a chunk error (see my screenshot, also visible in your screenshot), probably that is the cause for the mass spawning. The (client) console got spammed with &quot;wrong location&quot; messages.&lt;/p&gt;</comment>
                            <comment id="93736" author="ordalca" created="Mon, 22 Jul 2013 21:07:20 +0200"  >&lt;p&gt;This has the full world folder.  If you need a different one, I can try a different host.&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;http://d-h.st/unX&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://d-h.st/unX&lt;/a&gt;&lt;/p&gt;
</comment>
                            <comment id="93714" author="kumasasa" created="Mon, 22 Jul 2013 20:02:44 +0200"  >&lt;p&gt;Can you put the file on a third party file hoster and provide the link here ?&lt;/p&gt;</comment>
                            <comment id="93669" author="ordalca" created="Mon, 22 Jul 2013 15:36:14 +0200"  >&lt;p&gt;That&apos;s about 100 MB, so how should I send them?&lt;/p&gt;</comment>
                            <comment id="93614" author="kumasasa" created="Mon, 22 Jul 2013 07:13:04 +0200"  >&lt;p&gt;@Mike Hultquist: Your ZIP file doesn&apos;t work, the subfolders (data, region, players,...) are missing.&lt;/p&gt;</comment>
                            <comment id="93495" author="decicus" created="Sun, 21 Jul 2013 23:54:17 +0200"  >&lt;p&gt;Thank you, Mike. That should help in some way.&lt;/p&gt;

&lt;p&gt;Doesn&apos;t really matter if it&apos;s singleplayer, since SP is basically a &quot;server&quot; running anyways.&lt;/p&gt;</comment>
                            <comment id="93478" author="ordalca" created="Sun, 21 Jul 2013 22:43:49 +0200"  >&lt;p&gt;I haven&apos;t seen a world upload yet, so while this is a single player world, here&apos;s mine with this bug.  I think the zip works, but if not, please direct me to somewhere I can learn how to submit the world.&lt;/p&gt;</comment>
                            <comment id="88418" author="wolfiemario" created="Wed, 10 Jul 2013 21:46:59 +0200"  >&lt;p&gt;That&apos;s different, as it&apos;s caused by the game trying to meet a &quot;quota&quot; of passive and hostile mobs. It&apos;s the same reason Endermen grinders in the End work so well.&lt;/p&gt;

&lt;p&gt;This bug causes entities to continue spawning, hundreds of times higher than their quotas/caps.&lt;/p&gt;</comment>
                            <comment id="88328" author="m1ner1" created="Wed, 10 Jul 2013 20:58:43 +0200"  >&lt;p&gt;if you make a superflat world with only air and use a third party editor to place blocks you will get mass spawns&lt;/p&gt;</comment>
                            <comment id="88192" author="decicus" created="Wed, 10 Jul 2013 16:54:55 +0200"  >&lt;p&gt;I should&apos;ve uploaded the world files back when I originally posted about this back in December. As of right now, I don&apos;t have it, but I&apos;m gonna ask some of the server folks to see if anyone still has a copy of the world.&lt;/p&gt;

&lt;p&gt;EDIT: We have not had this issue since that time though, if we do get it in the end, I will make sure to upload a world file with the approximate coordinates of the issue.&lt;/p&gt;</comment>
                            <comment id="88181" author="evilseph" created="Wed, 10 Jul 2013 16:42:24 +0200"  >&lt;p&gt;If you&apos;re having this issue with anything other than Ocelots, a world upload would give me somewhere to start with looking into this issue. Until then, there&apos;s not much I can do as I&apos;m unable to come up with a way to reproduce this issue on demand.&lt;/p&gt;</comment>
                            <comment id="74796" author="thatoneguy2400" created="Mon, 17 Jun 2013 18:40:06 +0200"  >&lt;p&gt;I have this issue with sheep, near a chunk that won&apos;t load.  I tried to set them on fire, but they are not flammable enough.  Slows to a crawl when nearby.&lt;/p&gt;</comment>
                            <comment id="65701" author="amaranth" created="Fri, 10 May 2013 03:15:05 +0200"  >&lt;p&gt;People who have this issue with something other than ocelots (since that is a separate issue) should upload a copy of their world (or a small enough subset of their world that still shows the issue). Since this is likely some kind of corruption knowing what is corrupted and how would be extremely helpful for fixing it.&lt;/p&gt;</comment>
                            <comment id="65390" author="bljat" created="Tue, 7 May 2013 22:12:59 +0200"  >&lt;p&gt;Reopened &lt;a href=&quot;https://bugs.mojang.com/browse/MC-15173&quot; title=&quot;Ocelots not despawing; accumulate in Jungles over time&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-15173&quot;&gt;&lt;del&gt;MC-15173&lt;/del&gt;&lt;/a&gt; as the ocelot mass spawning is a different issue after all.&lt;/p&gt;</comment>
                            <comment id="65160" author="gr0dzik" created="Sun, 5 May 2013 21:15:13 +0200"  >&lt;p&gt;I have same issue with ocelots. For me switching back to snapshot 13w17a fixes the problem, ocelots despawn with time, switching to 13w18abc makes them spawn in large numbers again.&lt;/p&gt;</comment>
                            <comment id="65158" author="quimoth" created="Sun, 5 May 2013 21:08:25 +0200"  >&lt;p&gt;Lol i just found out this bug existed, suddenly there were like 500 ocelots that had spawned inside my farm. rly weird, lost all my chickens but got enough ocelots to scare a gaint creeper away &lt;img class=&quot;emoticon&quot; src=&quot;https://bugs.mojang.com/images/icons/emoticons/tongue.png&quot; height=&quot;16&quot; width=&quot;16&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt;&lt;/p&gt;

&lt;p&gt;ps. can anyone tell me how to prevent my world from crashing due to an overload of ocelots? right now i can still play, but if this continues, minecraft will probably crash.&lt;/p&gt;</comment>
                            <comment id="65137" author="decicus" created="Sun, 5 May 2013 19:37:24 +0200"  >&lt;p&gt;Tails, the funny part of this though, is that we deleted and reloaded the chunk using MCEdit, and the problem still persisted. Wouldn&apos;t reloading the chunk help towards corrupted chunks?&lt;/p&gt;</comment>
                            <comment id="65135" author="bljat" created="Sun, 5 May 2013 19:16:04 +0200"  >&lt;p&gt;&lt;a href=&quot;https://twitter.com/Dinnerbone/status/331076749150523392&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://twitter.com/Dinnerbone/status/331076749150523392&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="56359" author="greg065" created="Fri, 22 Mar 2013 19:23:22 +0100"  >&lt;p&gt;happened to me too, i was playing in multiplayer in an hunger game server, then my fps istant dropped to 0, i think this is the problem&lt;/p&gt;</comment>
                            <comment id="56092" author="wolfiemario" created="Thu, 21 Mar 2013 18:42:47 +0100"  >&lt;p&gt;Yes, that looks good. Mojang tends to put crash bugs on higher priority (as they should), so I figure this will help.&lt;/p&gt;</comment>
                            <comment id="56088" author="decicus" created="Thu, 21 Mar 2013 18:32:19 +0100"  >&lt;p&gt;Gerrard, I changed the title for you. Is that how you wanted it to explain?&lt;/p&gt;</comment>
                            <comment id="56072" author="wolfiemario" created="Thu, 21 Mar 2013 17:45:00 +0100"  >&lt;p&gt;Can the title be changed to make it clear that this bug causes crashes?&lt;/p&gt;</comment>
                            <comment id="56067" author="cyclo" created="Thu, 21 Mar 2013 17:32:37 +0100"  >&lt;p&gt;This recently happened to me after upgrading to 1.5. The issue has appeared twice, the first time 9600 sheep we&apos;re inside a small area. The second time it was 5000+ skeletons and 1000 other passive mods.&lt;/p&gt;</comment>
                            <comment id="55793" author="dockers" created="Wed, 20 Mar 2013 14:54:48 +0100"  >&lt;p&gt;This is still a problem in 1.5. My world spawned several thousand chickens and eggs and has made my world completely unplayable, even after removing the entities and deleting the chunks in MCedit. I had had some problems with the same issue in 1.4.7 but unfortunately 1.5 did not fix it. &lt;/p&gt;</comment>
                            <comment id="31775" author="wolfiemario" created="Mon, 31 Dec 2012 21:16:52 +0100"  >&lt;p&gt;I was playing a map by Hypixel, when suddenly a good several hundred bats spawned in the dark space under the map (out of bounds for gameplay purposes; this isn&apos;t something Hypixel would do on purpose). Nobody else has said it happened to them, and I have found no evidence of bat spawners in the entire map. Also, the event did not repeat when starting from a fresh copy of the map, even when repeating my actions practically the same way. The map in question is Herobrine&apos;s Mansion, but that should largely be irrelevant: I&apos;ve heard on the wiki of hundreds of bats spawning this way in singleplayer.&lt;/p&gt;

&lt;p&gt;Even if, by some unlikely chance, this bat issue is &quot;not a bug&quot;, in the same way that squid spawn in massive packs in new chunks, it should still be addressed by putting a cap on how many can spawn at once; at first my Minecraft crashed and I had to use MCedit to determine that there were hundreds of bats in one area.&lt;/p&gt;

&lt;p&gt;But I think it&apos;s more likely that my issues with the bats are related to everyone else&apos;s sudden excessive mob explosions. I should mention that I was playing in singleplayer when this happened, but it seems unlikely for a bug of this nature to be limited to SMP anyhow, considering SSP is a local server (SMP-specific bugs usually rely on issues between the client and the server - but the sheep in this report are actual entities, else there wouldn&apos;t be any server crashes).&lt;/p&gt;</comment>
                            <comment id="31752" author="torabi" created="Mon, 31 Dec 2012 19:16:33 +0100"  >&lt;p&gt;Aha! I knew I&apos;ve seen a couple other reports like this on the tracker! &lt;a href=&quot;https://bugs.mojang.com/browse/MC-362&quot; title=&quot;Skeleton and Spiders spawn everywhere.&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-362&quot;&gt;&lt;del&gt;MC-362&lt;/del&gt;&lt;/a&gt; and &lt;a href=&quot;https://bugs.mojang.com/browse/MC-2293&quot; title=&quot;Sudden population explosion of mobs&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-2293&quot;&gt;&lt;del&gt;MC-2293&lt;/del&gt;&lt;/a&gt; are both the same problem, but without enough information, so they were marked as &quot;Cannot Reproduce&quot; and &quot;Incomplete&quot;. However, &lt;a href=&quot;https://bugs.mojang.com/browse/MC-2131&quot; title=&quot;Stepping into an unloaded chunk is SSP seems to corrupt the file&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-2131&quot;&gt;&lt;del&gt;MC-2131&lt;/del&gt;&lt;/a&gt; is still open, and describes the same problem.&lt;/p&gt;</comment>
                            <comment id="26213" author="decicus" created="Sun, 2 Dec 2012 12:44:49 +0100"  >&lt;p&gt;To add to this, after further investigation, it seems to only happen with sheep. The 5000 entities are actually 5000 sheep. How this happened, is this unknown.&lt;/p&gt;</comment>
                            <comment id="26199" author="kumasasa" created="Sun, 2 Dec 2012 11:48:55 +0100"  >&lt;p&gt;Yes, thanks.&lt;/p&gt;</comment>
                            <comment id="26197" author="decicus" created="Sun, 2 Dec 2012 10:47:26 +0100"  >&lt;p&gt;It&apos;s running the normal minecraft server version that you can get from Minecraft.net, if that&apos;s what you mean.&lt;/p&gt;</comment>
                            <comment id="26178" author="kumasasa" created="Sun, 2 Dec 2012 07:41:47 +0100"  >&lt;p&gt;What server version ?&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10000">
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