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    <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>
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<item>
            <title>[MC-3490] Minecarts and falling entities flickering / jittering (updated 1.4.5)</title>
                <link>https://bugs.mojang.com/browse/MC-3490</link>
                <project id="10400" key="MC">Minecraft: Java Edition</project>
                    <description>&lt;p&gt;Lots of flickering of the minecart when riding and falling sand, gravel and anvils flicker too.&lt;/p&gt;

&lt;p&gt;With the new &quot;non-flickering&quot; build of 1.4.5.&lt;/p&gt;</description>
                <environment>Win7x64/7u9x64</environment>
        <key id="15549">MC-3490</key>
            <summary>Minecarts and falling entities flickering / jittering (updated 1.4.5)</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="dinnerbone">[Mojang] Nathan Adams</assignee>
                                    <reporter username="richardcox13">Richard Cox</reporter>
                        <labels>
                            <label>flicker</label>
                            <label>minecart</label>
                    </labels>
                <created>Mon, 19 Nov 2012 19:08:00 +0100</created>
                <updated>Sun, 3 May 2015 06:23:47 +0200</updated>
                            <resolved>Wed, 5 Dec 2012 18:12:56 +0100</resolved>
                                    <version>Minecraft 1.4.5</version>
                                    <fixVersion>Snapshot 12w49a</fixVersion>
                                                        <votes>43</votes>
                                    <watches>7</watches>
                                                                            <comments>
                            <comment id="26953" author="kahless61" created="Fri, 7 Dec 2012 19:21:46 +0100"  >&lt;p&gt;I also confirm that mine carts, sand, and gravel no longer flicker/jitter in 12w49a. Everything is nice and smooth.&lt;/p&gt;</comment>
                            <comment id="26936" author="richardcox13" created="Fri, 7 Dec 2012 17:34:40 +0100"  >&lt;p&gt;Can confirm mine carts not flickering in 12w49a.&lt;/p&gt;

&lt;p&gt;Didn&apos;t really look at other blocks in details, but impression is that they fall more smoothly.&lt;/p&gt;</comment>
                            <comment id="26896" author="kokotron" created="Fri, 7 Dec 2012 08:14:22 +0100"  >&lt;p&gt;I think this is the same issue that applies here (possible duplicate): &lt;a href=&quot;https://bugs.mojang.com/browse/MC-3515&quot; title=&quot;Gravel &amp;quot;flickering&amp;quot; and slight lag when destroying&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-3515&quot;&gt;&lt;del&gt;MC-3515&lt;/del&gt;&lt;/a&gt; - There&apos;s a video there I posted that shows the issue of falling blocks jittering/flickering &lt;a href=&quot;https://mojang.atlassian.net/secure/attachment/14765/Minecraft145_animation_lag.mp4&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://mojang.atlassian.net/secure/attachment/14765/Minecraft145_animation_lag.mp4&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="26846" author="alex_dlc" created="Thu, 6 Dec 2012 21:50:14 +0100"  >&lt;p&gt;@Kumasasa Well then its another bug because mine is in 1.4.5&lt;/p&gt;</comment>
                            <comment id="26837" author="kumasasa" created="Thu, 6 Dec 2012 20:56:57 +0100"  >&lt;p&gt;@Alejandro, that should&apos;ve been fixed with 1.4.3, see &lt;a href=&quot;https://bugs.mojang.com/browse/MC-6&quot; title=&quot;Minecart sound doesn&amp;#39;t stop&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-6&quot;&gt;&lt;del&gt;MC-6&lt;/del&gt;&lt;/a&gt; . &lt;/p&gt;</comment>
                            <comment id="26793" author="alex_dlc" created="Thu, 6 Dec 2012 16:54:40 +0100"  >&lt;p&gt;@Richard that is not the same thing as what I am experiencing. &lt;/p&gt;</comment>
                            <comment id="26792" author="richardcox13" created="Thu, 6 Dec 2012 16:52:19 +0100"  >&lt;p&gt;@Alejandro&lt;/p&gt;

&lt;p&gt;Such an issue already exists: &lt;a href=&quot;https://bugs.mojang.com/browse/MC-1642&quot; title=&quot;Minecart noise gets stuck on long cart rides. | Bumping, choppy sound&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-1642&quot;&gt;&lt;del&gt;MC-1642&lt;/del&gt;&lt;/a&gt; (as noted above).&lt;/p&gt;</comment>
                            <comment id="26786" author="alex_dlc" created="Thu, 6 Dec 2012 16:39:31 +0100"  >&lt;p&gt;I have noticed a sound issue where the minecart sound keeps playing even when no minecart is moving. I thought it might have been caused by the &quot;jittering&quot; but if not, I will create an issue for it. Thank you for fixing this issue Dinnerbone!&lt;/p&gt;</comment>
                            <comment id="26780" author="dinnerbone" created="Thu, 6 Dec 2012 16:21:53 +0100"  >&lt;p&gt;Any audio issues are unrelated to this issue. This issue is about the &quot;jittering&quot; (bouncing back and forth quickly) of various entities, most notably minecarts and falling sand. That bug has been fixed for the next release.&lt;/p&gt;</comment>
                            <comment id="26778" author="biggraygolem" created="Thu, 6 Dec 2012 16:17:08 +0100"  >&lt;p&gt;Unfortuntely, this bug is polluted with multiple issues, and all other &quot;minecart clipping&quot; threads are being closed as duplicates of this one. I am just writing to confirm the minecart clipping/jerking problem, which occurs along with corrupted audio playback of the minecart sound effects. I hope others will open another bug on the falling entities problem, or Mojang will split this. The minecart lag problem is severe. Tested in new worlds, as well as heavily populated ones. Tested using multiple RAM allotments, different audio drivers, video drivers. No effect. The visible stutter of the cart occurs in all views (1st and 3rd person), and occurs 100% of the time. The related audio stutter is intermittent.&lt;/p&gt;</comment>
                            <comment id="26427" author="jespertheend" created="Mon, 3 Dec 2012 16:05:47 +0100"  >&lt;p&gt;@Xavier Brown&lt;br/&gt;
It&apos;s a falling obsidian block&lt;/p&gt;</comment>
                            <comment id="26424" author="alex_dlc" created="Mon, 3 Dec 2012 15:03:08 +0100"  >&lt;p&gt;i am experiencing this bug and it is really annoying! hope it gets fixed&lt;/p&gt;</comment>
                            <comment id="26340" author="firehunterx" created="Sun, 2 Dec 2012 22:21:44 +0100"  >&lt;p&gt;Dragon Eggs when falling are just black cubes until they land.&lt;/p&gt;</comment>
                            <comment id="26116" author="thibooms" created="Sat, 1 Dec 2012 21:40:59 +0100"  >&lt;p&gt;Indeed, this is horrible.&lt;/p&gt;</comment>
                            <comment id="26099" author="kumasasa" created="Sat, 1 Dec 2012 19:31:22 +0100"  >&lt;p&gt;No, yet there is only the &quot;minor&quot; priority.&lt;br/&gt;
Important for the community is to &quot;vote&quot; for this bug, die push the bug to the front of the to-do queue.&lt;/p&gt;</comment>
                            <comment id="26097" author="league" created="Sat, 1 Dec 2012 18:39:02 +0100"  >&lt;p&gt;@kumassa can you change the priority of the bug?&lt;/p&gt;</comment>
                            <comment id="26069" author="mrsergio" created="Sat, 1 Dec 2012 14:17:02 +0100"  >&lt;p&gt;Confirmed in 1.4.5.&lt;/p&gt;

&lt;p&gt;Very annoying bug!&lt;br/&gt;
It seems that Mojang don&apos;t test their updates before release? Maybe yes.&lt;/p&gt;</comment>
                            <comment id="25633" author="damonpayne80" created="Thu, 29 Nov 2012 04:33:12 +0100"  >&lt;p&gt;Confirmed 1.4.5. &lt;/p&gt;

&lt;p&gt;Echo on all. Sand block is dropping to lower ground, not very smooth. Cart utility is jumping. Noticeable 4-5 mm skipped frames on both. &lt;/p&gt;</comment>
                            <comment id="24478" author="richardcox13" created="Fri, 23 Nov 2012 23:43:52 +0100"  >&lt;p&gt;@Peter: There is a separate bug report for the mine cart sound problems... which were in 1.4.2 and earlier (IIRC).&lt;/p&gt;

&lt;p&gt;EDIT: This one: &lt;a href=&quot;https://bugs.mojang.com/browse/MC-1642&quot; title=&quot;Minecart noise gets stuck on long cart rides. | Bumping, choppy sound&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-1642&quot;&gt;&lt;del&gt;MC-1642&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;</comment>
                            <comment id="24465" author="mugwubs" created="Fri, 23 Nov 2012 22:05:11 +0100"  >&lt;p&gt;Saw this within 60 seconds of upgrading to 1.4.5, and it&apos;s quite terrible. Shows up on Windows XP and 7. I&apos;m playing single-player survival, no mods. Also the minecart sound was glitching, cutting out or rapidly looping a small sample of the sound effect. I also noticed when playing on an older computer that is &apos;only just&apos; good enough to run Minecraft, that after riding a minecart there is a big performance drop. (from ~15fps down to 1 or 2 fps!) Restarting Minecraft fixes it, until another Minecart is ridden. What is happening here? Problems like this should have been corrected before releasing the program to millions of paying players. I&apos;m a programmer, and even if I&apos;m making something that 6 people are using, I test every possible condition backwards, forwards and every which way, before releasing it.&lt;/p&gt;</comment>
                            <comment id="24450" author="vogstok" created="Fri, 23 Nov 2012 20:07:47 +0100"  >&lt;p&gt;Confirmed on 1.4.5, Vista 32bit SP3, Java 1.7.0_09 32-bit.&lt;/p&gt;</comment>
                            <comment id="24446" author="whizzer0" created="Fri, 23 Nov 2012 19:07:36 +0100"  >&lt;p&gt;I can confirm this bug.&lt;br/&gt;
Also, when I tried it with an in-game screen recorder mod, it crashed the game when recording.&lt;/p&gt;</comment>
                            <comment id="24333" author="banana478" created="Fri, 23 Nov 2012 04:09:38 +0100"  >&lt;p&gt;Duplicate of &lt;a href=&quot;https://bugs.mojang.com/browse/MC-3727&quot; title=&quot;Sand, Gravel, Minecarts, and Anvils jittery when moving&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-3727&quot;&gt;&lt;del&gt;MC-3727&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;</comment>
                            <comment id="24316" author="jasondude7116" created="Fri, 23 Nov 2012 02:39:52 +0100"  >&lt;p&gt;Confirmed with clients: 1.4.4 and 1.4.5 (all versions)(Win7-64bit)(64bit Java) on 1.4.4 and 1.4.5 servers (linux).&lt;/p&gt;</comment>
                            <comment id="24098" author="godyvdb" created="Thu, 22 Nov 2012 12:18:14 +0100"  >&lt;p&gt;Confirmed. 1.4.5(windows)(32bit java) on 1.4.5 server(linux)&lt;/p&gt;</comment>
                            <comment id="24016" author="robleachman" created="Thu, 22 Nov 2012 02:43:22 +0100"  >&lt;p&gt;OS X too: &lt;a href=&quot;http://www.youtube.com/watch?v=Kbv1SpRQxiU&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://www.youtube.com/watch?v=Kbv1SpRQxiU&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="23866" author="arii1986" created="Wed, 21 Nov 2012 16:09:45 +0100"  >&lt;p&gt;Just updated to 1.4.5 today - this is a horrible bug &lt;img class=&quot;emoticon&quot; src=&quot;https://bugs.mojang.com/images/icons/emoticons/sad.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;</comment>
                            <comment id="23827" author="gjohns" created="Wed, 21 Nov 2012 09:16:39 +0100"  >&lt;p&gt;Confirmed on 1.4.5 .  Same map on 1.4.4 was smooth with 245-300 fps on powered rail.  1.4.5 on same map, same rail gets ~150fps with severe jerky minecart motion.  The cart looks like it&apos;s moving in small jumps instead of smooth motion like before.&lt;/p&gt;</comment>
                            <comment id="23684" author="jespertheend" created="Tue, 20 Nov 2012 20:24:07 +0100"  >&lt;p&gt;does happen for falling sand...&lt;br/&gt;
kind of like it actually. Feels really minecraft-ish&lt;/p&gt;</comment>
                            <comment id="23454" author="kumasasa" created="Mon, 19 Nov 2012 23:20:15 +0100"  >&lt;p&gt;Additional info: Does &lt;b&gt;not&lt;/b&gt; occur with boats or ridden pigs&lt;/p&gt;</comment>
                            <comment id="23420" author="kumasasa" created="Mon, 19 Nov 2012 22:20:58 +0100"  >&lt;p&gt;Confirmed. I did test first with 1.4.5 pre1 (non flickerung), then with 1.4.5 pre2 (&lt;b&gt;severe&lt;/b&gt; flickering)&lt;/p&gt;</comment>
                            <comment id="23419" author="chalmes" created="Mon, 19 Nov 2012 22:19:11 +0100"  >&lt;p&gt;Can confirm.  This is pretty nasty, as Richard indicated, its worse in-game than what the video managed to capture.&lt;/p&gt;</comment>
                            <comment id="23416" author="richardcox13" created="Mon, 19 Nov 2012 22:13:34 +0100"  >&lt;p&gt;Short video that (sort of) shows the problem. On screen it appears far more extreme.&lt;/p&gt;</comment>
                            <comment id="23413" author="richardcox13" created="Mon, 19 Nov 2012 22:10:05 +0100"  >&lt;p&gt;@Kumasasa: no.&lt;/p&gt;

&lt;p&gt;This is much more sever, and happens to all sides of the cart, looking to the sides as well as both forward and backwards.&lt;/p&gt;</comment>
                            <comment id="23404" author="kumasasa" created="Mon, 19 Nov 2012 21:49:41 +0100"  >&lt;p&gt;Are you relating to &lt;a href=&quot;https://bugs.mojang.com/browse/MC-191&quot; title=&quot;Minecart flickers when looking backwards&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-191&quot;&gt;&lt;del&gt;MC-191&lt;/del&gt;&lt;/a&gt; ?&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10102">
                    <name>Duplicate</name>
                                                                <inwardlinks description="is duplicated by">
                                        <issuelink>
            <issuekey id="15622">MC-3545</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="15624">MC-3547</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="15632">MC-3555</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="15637">MC-3559</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="15638">MC-3560</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="15679">MC-3588</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="15686">MC-3594</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="15868">MC-3727</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="15951">MC-3790</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="15953">MC-3792</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="16137">MC-3891</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="16251">MC-3966</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="16363">MC-4042</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="16544">MC-4125</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="17241">MC-4710</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                    </issuelinks>
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                            <attachment id="13852" name="ScreenCapture_2012-11-19 21.02.21.wmv" size="839965" author="richardcox13" created="Mon, 19 Nov 2012 22:13:34 +0100"/>
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