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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>[MCPE-14606] Pistons have slower ticks than PC, which creates issues when building certain redstone contraptions.</title>
                <link>https://bugs.mojang.com/browse/MCPE-14606</link>
                <project id="10200" key="MCPE">Minecraft (Bedrock codebase)</project>
                    <description>&lt;p&gt;Android Nvidia Shield Tablet K1&lt;br/&gt;
MCPE 0.15.0&lt;/p&gt;</description>
            <key id="142169">MCPE-14606</key>
            <summary>Pistons have slower ticks than PC, which creates issues when building certain redstone contraptions.</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>
                                            <reporter username="OMGItzApple">D</reporter>
                        <labels>
                    </labels>
                <created>Fri, 3 Jun 2016 17:21:07 +0200</created>
                <updated>Sat, 18 Jun 2016 05:27:58 +0200</updated>
                            <resolved>Fri, 17 Jun 2016 14:58:30 +0200</resolved>
                                    <version>0.15.0 Beta build 1</version>
                    <version>0.15.0</version>
                                                                        <votes>2</votes>
                                    <watches>4</watches>
                                                                            <comments>
                            <comment id="314483" author="omgitzapple" created="Sat, 18 Jun 2016 05:27:58 +0200"  >&lt;p&gt;Alright, Alright... The problem is when you try to build a fast clock, the piston can&apos;t keep up with the ticks&lt;/p&gt;</comment>
                            <comment id="314370" author="plantseed" created="Fri, 17 Jun 2016 16:20:06 +0200"  >&lt;p&gt;Thanks &lt;a href=&quot;https://bugs.mojang.com/secure/ViewProfile.jspa?name=depressed-pho&quot; class=&quot;user-hover&quot; rel=&quot;depressed-pho&quot;&gt;depressed-pho&lt;/a&gt;, I&apos;ll update the affected version to both of these issues, when it still occur in future versions.&lt;/p&gt;</comment>
                            <comment id="314358" author="depressed-pho" created="Fri, 17 Jun 2016 14:58:30 +0200"  >&lt;p&gt;Done:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;&lt;a href=&quot;https://bugs.mojang.com/browse/MCPE-15605&quot; title=&quot;Pistons that got activated can&amp;#39;t be sticked to a slime block&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MCPE-15605&quot;&gt;&lt;del&gt;MCPE-15605&lt;/del&gt;&lt;/a&gt;&lt;/li&gt;
	&lt;li&gt;&lt;a href=&quot;https://bugs.mojang.com/browse/MCPE-15606&quot; title=&quot;Powered piston not extending if it was previously blocked&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MCPE-15606&quot;&gt;&lt;del&gt;MCPE-15606&lt;/del&gt;&lt;/a&gt;&lt;/li&gt;
	&lt;li&gt;&lt;a href=&quot;https://bugs.mojang.com/browse/MCPE-15607&quot; title=&quot;Pistons take 3 redstone ticks to extend and 1 tick to retract, which should both take only 1 rs tick&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MCPE-15607&quot;&gt;&lt;del&gt;MCPE-15607&lt;/del&gt;&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;I set the reporter of the first two issues to &lt;a href=&quot;https://bugs.mojang.com/secure/ViewProfile.jspa?name=PlantSeed&quot; class=&quot;user-hover&quot; rel=&quot;PlantSeed&quot;&gt;PlantSeed&lt;/a&gt; because it&apos;s them that reported those issues.&lt;/p&gt;</comment>
                            <comment id="314354" author="depressed-pho" created="Fri, 17 Jun 2016 14:27:16 +0200"  >&lt;p&gt;I asked developers about this issue, and it turned out that there were 3 different bugs in it, namely &lt;a href=&quot;https://bugs.mojang.com/secure/ViewProfile.jspa?name=PlantSeed&quot; class=&quot;user-hover&quot; rel=&quot;PlantSeed&quot;&gt;PlantSeed&lt;/a&gt;&apos;s first screenshot (slime block doesn&apos;t move the piston), &lt;a href=&quot;https://bugs.mojang.com/secure/ViewProfile.jspa?name=PlantSeed&quot; class=&quot;user-hover&quot; rel=&quot;PlantSeed&quot;&gt;PlantSeed&lt;/a&gt;&apos;s second and third screenshot (pistons that should extend can fail to do so), and my fourth screenshot (piston&apos;s movement is significantly slower compared to the PC edition).&lt;/p&gt;

&lt;p&gt;So I&apos;m going to split it into 3 separate tickets. Since &lt;a href=&quot;https://bugs.mojang.com/secure/ViewProfile.jspa?name=OMGItzApple&quot; class=&quot;user-hover&quot; rel=&quot;OMGItzApple&quot;&gt;OMGItzApple&lt;/a&gt;&apos;s original report is so vague that I have no idea what they really meant, I will close it as &lt;b&gt;Incomplete&lt;/b&gt;.&lt;/p&gt;</comment>
                            <comment id="313627" author="depressed-pho" created="Tue, 14 Jun 2016 18:36:05 +0200"  >&lt;p&gt;&lt;b&gt;Confirmed in 0.15.0&lt;/b&gt;&lt;br/&gt;
The screenshot shown below is a falling-edge detector which should emit 2 ticks pulse on a falling-edge and shouldn&apos;t emit a pulse on a rising edge.&lt;br/&gt;
&lt;span class=&quot;image-wrap&quot; style=&quot;&quot;&gt;&lt;a id=&quot;119905_thumb&quot; href=&quot;https://bugs.mojang.com/secure/attachment/119905/119905_slow-piston.png&quot; title=&quot;slow-piston.png&quot; file-preview-type=&quot;image&quot; file-preview-id=&quot;119905&quot; file-preview-title=&quot;slow-piston.png&quot;&gt;&lt;img src=&quot;https://bugs.mojang.com/secure/thumbnail/119905/_thumb_119905.png&quot; style=&quot;border: 0px solid black&quot; role=&quot;presentation&quot;/&gt;&lt;/a&gt;&lt;/span&gt;&lt;br/&gt;
The repeater is set to 2 ticks delay. On a rising edge the piston should take 1.5 redstone ticks to extend so there should be no pulse emitted from the output. On a falling edge the piston should retract instantly (0 redstone ticks) so there should be 2 ticks pulse from the output.&lt;/p&gt;

&lt;p&gt;However in 0.15.0, pistons take 2.5 or 3 redstone ticks to extend and 1 or 1.5 redstone ticks to retract, so the said circuit instead works as a 1 tick dual-edge detector.&lt;/p&gt;</comment>
                            <comment id="310472" author="plantseed" created="Sun, 5 Jun 2016 05:56:54 +0200"  >&lt;p&gt;The screenshot was attached by me, and there is no invisible block.&lt;/p&gt;</comment>
                            <comment id="310449" author="aman4700" created="Sun, 5 Jun 2016 05:17:46 +0200"  >&lt;p&gt;I think in the second pic between the andesite, its an invisible block. Can you check Drew?&lt;/p&gt;</comment>
                            <comment id="310417" author="plantseed" created="Sun, 5 Jun 2016 03:24:57 +0200"  >&lt;p&gt;If it was intended, it doesn&apos;t make sense.&lt;/p&gt;</comment>
                            <comment id="309924" author="pronoob135" created="Fri, 3 Jun 2016 21:57:15 +0200"  >&lt;p&gt;Likely works as intended, pistons cannot be 0 ticked in pe.&lt;/p&gt;</comment>
                            <comment id="309872" author="captainneminem" created="Fri, 3 Jun 2016 20:36:56 +0200"  >&lt;p&gt;Pretty interesting behaviour..&lt;/p&gt;</comment>
                            <comment id="309815" author="plantseed" created="Fri, 3 Jun 2016 18:09:15 +0200"  >&lt;p&gt;This screenshot explain everything.&lt;/p&gt;</comment>
                    </comments>
                    <attachments>
                            <attachment id="118432" name="Screenshot_2016-06-03-23-06-18.png" size="244688" author="PlantSeed" created="Fri, 3 Jun 2016 18:09:15 +0200"/>
                            <attachment id="118721" name="Screenshot_2016-06-05-08-19-49.png" size="411254" author="PlantSeed" created="Sun, 5 Jun 2016 03:24:57 +0200"/>
                            <attachment id="120021" name="Screenshot_2016-06-16-10-50-38.png" size="298768" author="PlantSeed" created="Thu, 16 Jun 2016 05:54:35 +0200"/>
                            <attachment id="119905" name="slow-piston.png" size="1680932" author="depressed-pho" created="Tue, 14 Jun 2016 18:36:05 +0200"/>
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