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    <title>Mojang Studios Jira</title>
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    <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-10677] Pistons fire more than once per tick / block teleporting</title>
                <link>https://bugs.mojang.com/browse/MC-10677</link>
                <project id="10400" key="MC">Minecraft: Java Edition</project>
                    <description>&lt;p&gt;(Sticky) pistons are able to fire more than once per tick, which can lead to very weird results like redstone dust that is powered on and off more than once per tick (compare &lt;a href=&quot;https://bugs.mojang.com/browse/MC-5778&quot; title=&quot;Redstone dust apperance stays powered or unpowered when it&amp;#39;s powered state is toggled fast&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-5778&quot;&gt;&lt;del&gt;MC-5778&lt;/del&gt;&lt;/a&gt;).&lt;/p&gt;

&lt;p&gt;Also, it allows you to move blocks more than one square in a single tick which looks like teleporting.&lt;/p&gt;

&lt;p&gt;And it leads to weird visual artifacts.&lt;/p&gt;

&lt;p&gt;I have attached a test world where you can reproduce the problem.&lt;/p&gt;

&lt;p&gt;Place one block in the middle between the pistons and it will move through all 4 positions in a single tick.&lt;/p&gt;

&lt;p&gt;Place two blocks diagonally to each other and they will swap places every tick.&lt;/p&gt;

&lt;p&gt;Suggested fix: Pistons should behave like one-tick-repeaters and only check once per tick if they should be extended or not.&lt;/p&gt;

&lt;p&gt;Note that this bug is limited to sticky pistons. Replace the pistons with normal ones, and it will behave better, although you will be probably affected by invisible blocks (&lt;a href=&quot;https://bugs.mojang.com/browse/MC-5774&quot; title=&quot;Blocks being constantly pushed by pistons turn invisible after some time&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-5774&quot;&gt;&lt;del&gt;MC-5774&lt;/del&gt;&lt;/a&gt;).&lt;/p&gt;</description>
                <environment>All</environment>
        <key id="24647">MC-10677</key>
            <summary>Pistons fire more than once per tick / block teleporting</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="-1">Unassigned</assignee>
                                    <reporter username="jonathanhaas">Jonathan Haas</reporter>
                        <labels>
                            <label>block</label>
                            <label>piston</label>
                            <label>visual</label>
                    </labels>
                <created>Fri, 1 Mar 2013 21:54:50 +0100</created>
                <updated>Tue, 2 May 2017 14:09:54 +0200</updated>
                            <resolved>Sun, 17 Mar 2013 18:31:45 +0100</resolved>
                                    <version>Snapshot 13w09c</version>
                                    <fixVersion>Minecraft 1.5</fixVersion>
                                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                            <comments>
                            <comment id="54615" author="bljat" created="Sun, 17 Mar 2013 18:31:45 +0100"  >&lt;p&gt;Thanks for the update.&lt;/p&gt;</comment>
                            <comment id="54613" author="jonathanhaas" created="Sun, 17 Mar 2013 18:30:35 +0100"  >&lt;p&gt;Seems to be fixed in 1.5, can&apos;t reproduce anymore.&lt;/p&gt;</comment>
                    </comments>
                    <attachments>
                            <attachment id="22957" name="2013-03-01_21.52.12_2.png" size="127644" author="jonathanhaas" created="Fri, 1 Mar 2013 21:54:50 +0100"/>
                            <attachment id="22958" name="2013-03-01_21.52.13.png" size="127568" author="jonathanhaas" created="Fri, 1 Mar 2013 21:54:50 +0100"/>
                            <attachment id="22959" name="2013-03-01_21.52.16_3.png" size="126681" author="jonathanhaas" created="Fri, 1 Mar 2013 21:54:50 +0100"/>
                            <attachment id="22956" name="Piston Bug.zip" size="139044" author="jonathanhaas" created="Fri, 1 Mar 2013 21:54:50 +0100"/>
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