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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-3345] Beacon effect not updating properly</title>
                <link>https://bugs.mojang.com/browse/MC-3345</link>
                <project id="10400" key="MC">Minecraft: Java Edition</project>
                    <description>&lt;p&gt;Beacon effect timer runs down to zero, effects go away, then a second later they come back, problem repeats. Seems to be a problem with just my world. Another world it still works fine. Also, problem is the same when playing the same world on my server or if I download it and try it in single player. &lt;/p&gt;</description>
                <environment>Windows 7&lt;br/&gt;
Java Version 7 update 9</environment>
        <key id="15338">MC-3345</key>
            <summary>Beacon effect not updating properly</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="4">Incomplete</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="crazyguymgd">Matt D</reporter>
                        <labels>
                    </labels>
                <created>Sun, 18 Nov 2012 00:38:45 +0100</created>
                <updated>Tue, 5 May 2015 06:24:21 +0200</updated>
                            <resolved>Mon, 24 Dec 2012 16:41:46 +0100</resolved>
                                    <version>Minecraft 1.4.4</version>
                    <version>Minecraft 1.4.5</version>
                                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                            <comments>
                            <comment id="199576" author="cyoor" created="Fri, 12 Sep 2014 19:26:16 +0200"  >&lt;p&gt;I can confirm this problem in 1.8.&lt;/p&gt;

&lt;p&gt;What happens:&lt;br/&gt;
1.) Beacon applies effect. UI moves and player gets particles.&lt;br/&gt;
2.) Beacon effect runs out. UI moves back and player loses particles.&lt;br/&gt;
3.) Player gets frustrated because he is in his base trying to craft and the UI moves 2 times every 10 seconds or so.&lt;br/&gt;
goto: 1.)&lt;/p&gt;

&lt;p&gt;This effect of the beacon is also discussed a bit in &lt;a href=&quot;https://bugs.mojang.com/browse/MC-44304&quot; title=&quot;Beacon refreshs effects too slowly&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-44304&quot;&gt;&lt;del&gt;MC-44304&lt;/del&gt;&lt;/a&gt;.&lt;br/&gt;
In &lt;a href=&quot;https://bugs.mojang.com/browse/MC-67798&quot; title=&quot;Inventory UI moves when player gets a buff.&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-67798&quot;&gt;&lt;del&gt;MC-67798&lt;/del&gt;&lt;/a&gt; the problem with the UI moving is discussed (But closed as &quot;working as intended&quot; after misunderstanding the &lt;em&gt;real&lt;/em&gt; problem).&lt;/p&gt;

&lt;p&gt;This is probably caused by the server not having exactly 20 ticks per second, and thus the beacon effect gets turned off/on again resulting in a moved UI every time (makin crafting almost impossible).&lt;/p&gt;

&lt;p&gt;What is causing the lag is (at least on our server) are for example the following:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;&lt;a href=&quot;https://bugs.mojang.com/browse/MC-17630&quot; title=&quot;Zombie pathfinding to unreachable targets causes server lag&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-17630&quot;&gt;&lt;del&gt;MC-17630&lt;/del&gt;&lt;/a&gt;&lt;/li&gt;
	&lt;li&gt;&lt;a href=&quot;https://bugs.mojang.com/browse/MC-58120&quot; title=&quot;&amp;quot;DoMobSpawning&amp;quot; is causing reduced tick speed, causing general tick lag&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-58120&quot;&gt;&lt;del&gt;MC-58120&lt;/del&gt;&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;In general the spawning algorithm and pathfinding is eating the CPU of the server.&lt;br/&gt;
(It should be possible to have villagers in your base without the server slowing down tbh.)&lt;/p&gt;

&lt;p&gt;Anyway.. Back to this issue..&lt;br/&gt;
The problem with the beacons losing the effect is annoying, but playing without beacon effect for 10-20% of the time is something that you can live with. What is more anoying is the moving UI when this happens.&lt;br/&gt;
It makes it impossible to do any kind of crafting with a beacon turned on in the area.&lt;/p&gt;</comment>
                            <comment id="183476" author="fungal_bloom" created="Fri, 1 Aug 2014 12:33:50 +0200"  >&lt;p&gt;I am having this issue as well with the beacon in out server in my house, but a different beacon with the same effects (regen 1 speed 1) at a different location on the same server is not having this issue. This is not fixed by leaving the area and re-loading it , buff still runs out for approximatly 3 seconds then refreshes.&lt;/p&gt;</comment>
                            <comment id="30510" author="kumasasa" created="Mon, 24 Dec 2012 16:41:46 +0100"  >&lt;p&gt;Incomplete.&lt;/p&gt;</comment>
                            <comment id="24793" author="kumasasa" created="Sun, 25 Nov 2012 12:08:19 +0100"  >&lt;p&gt;Can you please provide screenshots, I cannot reproduce this issue.&lt;/p&gt;</comment>
                            <comment id="22793" author="crazyguymgd" created="Sun, 18 Nov 2012 04:29:56 +0100"  >&lt;p&gt;Standing still.&lt;/p&gt;</comment>
                            <comment id="22739" author="kumasasa" created="Sun, 18 Nov 2012 00:40:04 +0100"  >&lt;p&gt;Are you standing still inside the range of the beacon or running outside the range and then inside again ?&lt;/p&gt;</comment>
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