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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>
    </build-info>


<item>
            <title>[MC-9342] Piston retracts an extended piston when de-powered at the same time.</title>
                <link>https://bugs.mojang.com/browse/MC-9342</link>
                <project id="10400" key="MC">Minecraft: Java Edition</project>
                    <description>&lt;p&gt;I de-powered 2 extended pistons at the same time. I did not expect the first piston to grab the second piston because they get de-powered at the same time.&lt;/p&gt;

&lt;p&gt;But instead, the first piston did grab the second piston.&lt;/p&gt;

&lt;p&gt;How to reproduce:&lt;br/&gt;
1. Build the setup from the picture&lt;br/&gt;
2. Flip the lever(s)&lt;br/&gt;
3. Notice that the second piston gets retracted by the first piston.&lt;/p&gt;</description>
                <environment>MAC OSX</environment>
        <key id="22929">MC-9342</key>
            <summary>Piston retracts an extended piston when de-powered at the same time.</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="6">Works As Intended</resolution>
                                        <assignee username="jeb">[Mojang] Jeb (Jens Bergensten)</assignee>
                                    <reporter username="minecraftchrizz">Chris</reporter>
                        <labels>
                    </labels>
                <created>Thu, 7 Feb 2013 19:28:48 +0100</created>
                <updated>Thu, 19 Nov 2015 00:34:03 +0100</updated>
                            <resolved>Fri, 1 Mar 2013 10:14:39 +0100</resolved>
                                    <version>Snapshot 13w06a</version>
                    <version>Snapshot 13w07a</version>
                    <version>Snapshot 13w09a</version>
                    <version>Snapshot 13w09b</version>
                    <version>Minecraft 1.7.4</version>
                    <version>Minecraft 14w05b</version>
                    <version>Minecraft 14w06b</version>
                    <version>Minecraft 14w07a</version>
                    <version>Minecraft 14w08a</version>
                    <version>Minecraft 1.7.5</version>
                    <version>Minecraft 14w10b</version>
                    <version>Minecraft 14w10c</version>
                    <version>Minecraft 14w11b</version>
                    <version>Minecraft 1.7.9</version>
                    <version>Minecraft 14w17a</version>
                    <version>Minecraft 14w18b</version>
                    <version>Minecraft 14w19a</version>
                    <version>Minecraft 14w20a</version>
                    <version>Minecraft 14w20b</version>
                    <version>Minecraft 14w21a</version>
                    <version>Minecraft 14w21b</version>
                    <version>Minecraft 1.7.10-pre1</version>
                    <version>Minecraft 1.7.10-pre2</version>
                    <version>Minecraft 14w25a</version>
                    <version>Minecraft 1.7.10-pre4</version>
                    <version>Minecraft 14w25b</version>
                    <version>Minecraft 14w26b</version>
                    <version>Minecraft 14w26c</version>
                    <version>Minecraft 1.7.10</version>
                    <version>Minecraft 14w27a</version>
                    <version>Minecraft 14w27b</version>
                    <version>Minecraft 14w28a</version>
                    <version>Minecraft 14w28b</version>
                    <version>Minecraft 14w29a</version>
                    <version>Minecraft 14w29b</version>
                    <version>Minecraft 14w30a</version>
                    <version>Minecraft 14w30b</version>
                    <version>Minecraft 14w32a</version>
                    <version>Minecraft 14w32b</version>
                    <version>Minecraft 14w32c</version>
                    <version>Minecraft 14w32d</version>
                    <version>Minecraft 14w33a</version>
                    <version>Minecraft 14w33c</version>
                    <version>Minecraft 14w34a</version>
                    <version>Minecraft 14w34b</version>
                    <version>Minecraft 14w34c</version>
                    <version>Minecraft 14w34d</version>
                    <version>Minecraft 1.8-pre1</version>
                    <version>Minecraft 1.8-pre2</version>
                    <version>Minecraft 1.8-pre3</version>
                    <version>Minecraft 1.8</version>
                                                                        <votes>4</votes>
                                    <watches>7</watches>
                                                                            <comments>
                            <comment id="266220" author="an_yminer" created="Thu, 19 Nov 2015 00:33:09 +0100"  >&lt;p&gt;I&apos;m gonna miss this bug.&lt;br/&gt;
But it definitely was a bug&lt;/p&gt;</comment>
                            <comment id="203226" author="boxfigs" created="Sun, 12 Oct 2014 20:46:30 +0200"  >&lt;p&gt;Oddly enough, with the horizontal setup, if you place another block and put redstone on top, the pistons behave as they did before.&lt;/p&gt;</comment>
                            <comment id="50943" author="yourruler" created="Fri, 8 Mar 2013 05:20:56 +0100"  >&lt;p&gt;I honestly hope that this is fixed as Dico suggested, or it is returned to the way it used to be done. As it is now it actually makes the double/triple extenders harder to build. &lt;/p&gt;</comment>
                            <comment id="50926" author="fibonatic" created="Fri, 8 Mar 2013 03:27:22 +0100"  >&lt;p&gt;If a bug would make an double piston extender more compact, doesn&apos;t mean it is consistent with the rest of the logic of the game.&lt;br/&gt;
And this compact double piston extension is also heavily direction dependent and inconsistent as demonstrated in this short video: &lt;a href=&quot;http://www.youtube.com/watch?v=_eqsc5Q3cko&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://www.youtube.com/watch?v=_eqsc5Q3cko&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;So I would really hope that this would either be removed or be made much more consistent.&lt;/p&gt;</comment>
                            <comment id="50873" author="schl3ck" created="Thu, 7 Mar 2013 22:50:35 +0100"  >&lt;p&gt;If you build the same setup but downwards, the upper piston doesn&apos;t retract the lower one, as it was in earlier versions.&lt;/p&gt;</comment>
                            <comment id="50027" author="dicotheredstoner" created="Tue, 5 Mar 2013 17:34:18 +0100"  >&lt;p&gt;@Jeb can you then also make it retract the block?&lt;/p&gt;</comment>
                            <comment id="48725" author="minecraftchrizz" created="Fri, 1 Mar 2013 17:56:26 +0100"  >&lt;p&gt;If it would retract both the piston and the block above, it would indeed be easier but that&apos;s not the case. It only retracts the piston and it leaves the block, this makes it harder to make double extenders instead of easier.&lt;/p&gt;</comment>
                            <comment id="48579" author="jeb" created="Fri, 1 Mar 2013 10:14:40 +0100"  >&lt;p&gt;I&apos;ve decided that this is the expected behavior. If I &quot;fix&quot; it, people will complain that it&apos;s much harder to do double-length piston extenders.&lt;/p&gt;</comment>
                            <comment id="48111" author="kuubaku" created="Wed, 27 Feb 2013 22:34:58 +0100"  >&lt;p&gt;Reproducible in 13w09b.&lt;/p&gt;</comment>
                            <comment id="45492" author="kuubaku" created="Wed, 13 Feb 2013 07:35:41 +0100"  >&lt;p&gt;Aha, and I thought that pistons are meant to extend in this manner too, but they don&apos;t due to &lt;a href=&quot;https://bugs.mojang.com/browse/MC-9341&quot; title=&quot;Powering 2 pistons extends the wrong piston!&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-9341&quot;&gt;&lt;del&gt;MC-9341&lt;/del&gt;&lt;/a&gt; - that&apos;s why I said &quot;cannot reproduce&quot; earlier. Thanks for highlighting that.&lt;/p&gt;</comment>
                            <comment id="44755" author="minecraftchrizz" created="Sat, 9 Feb 2013 15:40:31 +0100"  >&lt;p&gt;I&apos;ll explain:&lt;/p&gt;

&lt;p&gt;A piston cannot retract an extended piston.&lt;br/&gt;
The retracting of a piston takes time. (about 1 tick, not exactly sure)&lt;br/&gt;
The pistons are both de-powered at the exact same time.&lt;br/&gt;
That means that the pistons will both retract at the exact same time.&lt;br/&gt;
When the bottom piston starts retracting, the top piston isn&apos;t retracted yet.&lt;br/&gt;
That means the bottom piston shouldn&apos;t grab the piston above it, because it can&apos;t retract an extended piston.&lt;/p&gt;</comment>
                            <comment id="44695" author="kumasasa" created="Sat, 9 Feb 2013 10:09:12 +0100"  >&lt;p&gt;I don&apos;t see the bug here: Both pistons are de-powered = both pistons retract.&lt;/p&gt;

&lt;p&gt;When both pistons are observed independantly, the order of the two steps doesn&apos;t play a role here:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;The lower piston is depowered, it retracts and grabs the upper piston.&lt;/li&gt;
	&lt;li&gt;The upper piston is depowered, it retracts.&lt;/li&gt;
&lt;/ul&gt;


</comment>
                            <comment id="44557" author="kuubaku" created="Fri, 8 Feb 2013 20:08:22 +0100"  >&lt;p&gt;Could not reproduce this in 13w06a, probably for the same reason.&lt;/p&gt;</comment>
                            <comment id="44270" author="bljat" created="Thu, 7 Feb 2013 19:36:47 +0100"  >&lt;p&gt;Confirmed.&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10102">
                    <name>Duplicate</name>
                                                                <inwardlinks description="is duplicated by">
                                        <issuelink>
            <issuekey id="23315">MC-9614</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="23538">MC-9794</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="25192">MC-11097</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="25384">MC-11268</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="25385">MC-11269</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                            <issuelinktype id="10103">
                    <name>Relates</name>
                                            <outwardlinks description="relates to">
                                        <issuelink>
            <issuekey id="22928">MC-9341</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="23067">MC-9460</issuekey>
        </issuelink>
                            </outwardlinks>
                                                                <inwardlinks description="relates to">
                                        <issuelink>
            <issuekey id="121902">MC-88959</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="25482">MC-11354</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                    </issuelinks>
                <attachments>
                            <attachment id="21278" name="2013-02-07_19.24.33.png" size="200949" author="minecraftchrizz" created="Thu, 7 Feb 2013 19:28:48 +0100"/>
                            <attachment id="21279" name="2013-02-07_19.24.46.png" size="198210" author="minecraftchrizz" created="Thu, 7 Feb 2013 19:28:48 +0100"/>
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