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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-11309] Piston bug! wrong update mechanism - BUD</title>
                <link>https://bugs.mojang.com/browse/MC-11309</link>
                <project id="10400" key="MC">Minecraft: Java Edition</project>
                    <description>&lt;p&gt;The update mechanism of pistons are broken since 13w09b. I tested an elevator design from 1.4.7 in all snapshots and now its broken. The design was based on  a perfect timing and logic. In the Video I show you the Problem exactly. I think the reason is the changed updating mechanism of pistons. The BUD-powered Sticky fires first, not the normal piston. And thats the bug. Actually the directly powered normal piston should fire first! ... please fix this!&lt;/p&gt;</description>
                <environment>Mac OSX</environment>
        <key id="25429">MC-11309</key>
            <summary>Piston bug! wrong update mechanism - BUD</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="7">Invalid</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="spire">Stephan</reporter>
                        <labels>
                            <label>BUD</label>
                            <label>piston</label>
                            <label>redstone</label>
                    </labels>
                <created>Fri, 8 Mar 2013 15:34:32 +0100</created>
                <updated>Wed, 6 May 2015 09:06:11 +0200</updated>
                            <resolved>Tue, 26 Nov 2013 18:21:47 +0100</resolved>
                                    <version>Snapshot 13w10b</version>
                                                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                            <comments>
                            <comment id="121362" author="bljat" created="Tue, 26 Nov 2013 18:21:47 +0100"  >&lt;p&gt;No answer, assuming no longer an issue.&lt;/p&gt;</comment>
                            <comment id="95211" author="bljat" created="Mon, 29 Jul 2013 16:55:19 +0200"  >&lt;p&gt;    Is this still a concern in the &lt;em&gt;current Minecraft version&lt;/em&gt; 1.6.2 / Launcher version 1.1.3 ? 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="51126" author="spire" created="Fri, 8 Mar 2013 22:00:29 +0100"  >&lt;p&gt;I added the world file.&lt;/p&gt;</comment>
                            <comment id="51125" author="spire" created="Fri, 8 Mar 2013 21:57:55 +0100"  >&lt;p&gt;Jeah they changed the way pistons are updating. BUT its illogical that a BUD-powered piston is preferred. The normal piston is  powered directly, so this one should extend first. Like it was before. Im very sad about that 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; Because it took ages to invent this thing and as i said it is based on a perfectly calculated timing difference...&lt;/p&gt;</comment>
                            <comment id="51084" author="red" created="Fri, 8 Mar 2013 20:55:45 +0100"  >&lt;p&gt;Also check &lt;a href=&quot;https://bugs.mojang.com/browse/MC-11193&quot; title=&quot;The order in which powerable blocks (e.g. redstone dust blocks) along a wire are powered or de-powered is not clearly defined and causes a non-deterministic behavior for redstone contraptions&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-11193&quot;&gt;MC-11193&lt;/a&gt;, it might be similar&lt;/p&gt;</comment>
                            <comment id="51073" author="mihko9" created="Fri, 8 Mar 2013 20:23:33 +0100"  >&lt;p&gt;They said that they changed the way pistons update and that it might break BUD-s, so i think this is not a bug.&lt;/p&gt;</comment>
                            <comment id="51034" author="graypup" created="Fri, 8 Mar 2013 17:24:48 +0100"  >&lt;p&gt;Can you zip up the world file and upload it? Also, maybe they fixed that bug in the 1.5 prerelease&lt;/p&gt;</comment>
                    </comments>
                    <attachments>
                            <attachment id="23928" name="Bug.zip" size="206190" author="spire" created="Fri, 8 Mar 2013 22:00:01 +0100"/>
                            <attachment id="23892" name="Bugreport.m4v" size="9964016" author="spire" created="Fri, 8 Mar 2013 15:34:32 +0100"/>
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