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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-6623] Buggy piston behaviour when other pistons are close by</title>
                <link>https://bugs.mojang.com/browse/MC-6623</link>
                <project id="10400" key="MC">Minecraft: Java Edition</project>
                    <description>&lt;p&gt;When placing pistons horizontally adjacent but vertically one level apart, the upper piston won&apos;t retract until the lower one does.&lt;/p&gt;

&lt;p&gt;In the case I tested this I used three pistons:&lt;/p&gt;

&lt;p&gt;side view:&lt;/p&gt;

&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;- - - - -&lt;/li&gt;
	&lt;li&gt;- - - - -&lt;br/&gt;
r R S S S -&lt;br/&gt;
S S S P P -&lt;/li&gt;
	&lt;li&gt;- - P&apos;S&apos;-&lt;br/&gt;
S S S S S -&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;top view:&lt;/p&gt;

&lt;p&gt;r R S S S -&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;- - R R -&lt;/li&gt;
	&lt;li&gt;- - r r -&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;r = Redstone Wire&lt;br/&gt;
R = Repeater&lt;br/&gt;
S = Sandstone&lt;br/&gt;
S&apos;= Sandstone with Repeater and Redstone Wire in front of it (see top view)&lt;br/&gt;
P = Sticky Piston&lt;br/&gt;
P&apos;= Sticky Piston with Repeater and Redstone Wire in front of it (see top view)&lt;br/&gt;
T = Extension of an activated piston&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;= Air&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;I then activated first the lower repeaters then the upper one:&lt;/p&gt;

&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;- - - - -&lt;/li&gt;
	&lt;li&gt;- - S S -&lt;br/&gt;
r R S P T -&lt;br/&gt;
S S - T P -&lt;/li&gt;
	&lt;li&gt;- - P&apos;S&apos;-&lt;br/&gt;
S S S S S -&lt;/li&gt;
&lt;/ul&gt;


&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;- - S - -&lt;/li&gt;
	&lt;li&gt;- - T S -&lt;br/&gt;
r R S P T -&lt;br/&gt;
S S - T P -&lt;/li&gt;
	&lt;li&gt;- - P&apos;S&apos;-&lt;br/&gt;
S S S S S -&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;The upper piston will now only retract if all repeaters are deactivated.&lt;/p&gt;</description>
                <environment>Java Version 7 Update 7&lt;br/&gt;
Windows 7</environment>
        <key id="19300">MC-6623</key>
            <summary>Buggy piston behaviour when other pistons are close by</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="3">Duplicate</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="thjarkgh">Andreas Pirker</reporter>
                        <labels>
                    </labels>
                <created>Wed, 9 Jan 2013 01:17:43 +0100</created>
                <updated>Sun, 10 Feb 2013 03:00:50 +0100</updated>
                            <resolved>Wed, 9 Jan 2013 18:53:50 +0100</resolved>
                                    <version>Snapshot 13w01b</version>
                                                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                            <comments>
                            <comment id="34487" author="bljat" created="Wed, 9 Jan 2013 18:53:50 +0100"  >&lt;p&gt;Duplicate of &lt;a href=&quot;https://bugs.mojang.com/browse/MC-127&quot; title=&quot;Piston extended and retracted at the same time&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-127&quot;&gt;&lt;del&gt;MC-127&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;</comment>
                            <comment id="34409" author="thjarkgh" created="Wed, 9 Jan 2013 09:31:26 +0100"  >&lt;p&gt;tried to recreate the issue today:&lt;/p&gt;

&lt;p&gt;the lower picture shows the setup ... activation order: BACCBA caused the described bug yesterday, today it worked fine though ... maybe something system workload related?&lt;/p&gt;

&lt;p&gt;OTOH: found two other bugs while testing: first picture: rapid toggling of the lever caused the sticky pistons to loose the sandstone blocks&lt;/p&gt;

&lt;p&gt;second: found a way to recreate  &lt;a href=&quot;https://bugs.mojang.com/browse/MC-6624&quot; title=&quot;Pistons randomly get completely stuck (not BUD stuck - completely, irreversibly stuck)&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-6624&quot;&gt;&lt;del&gt;MC-6624&lt;/del&gt;&lt;/a&gt; reliably&lt;/p&gt;</comment>
                            <comment id="34352" author="bljat" created="Wed, 9 Jan 2013 01:20:12 +0100"  >&lt;p&gt;Please provide some screenshots.&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10102">
                    <name>Duplicate</name>
                                            <outwardlinks description="duplicates">
                                        <issuelink>
            <issuekey id="11372">MC-127</issuekey>
        </issuelink>
                            </outwardlinks>
                                                        </issuelinktype>
                    </issuelinks>
                <attachments>
                            <attachment id="17706" name="buggy pistons.jpg" size="810846" author="thjarkgh" created="Wed, 9 Jan 2013 09:31:26 +0100"/>
                    </attachments>
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