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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>[MCPE-14851] Sticky pistons can pull a block 1 tick after pushing one</title>
                <link>https://bugs.mojang.com/browse/MCPE-14851</link>
                <project id="10200" key="MCPE">Minecraft (Bedrock codebase)</project>
                    <description>&lt;p&gt;1 Connect the piston taken out of the pulsar signal using the observer block&lt;br/&gt;
2 Back and forth while the pressure-sensitive adhesive piston with a block&lt;/p&gt;

&lt;p&gt;This is not might be a specification but is inconvenient and can not use a piston type t flip-flop&#65281;&lt;/p&gt;

&lt;p&gt;&lt;b&gt;Edit by&lt;/b&gt; &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;:&lt;br/&gt;
Sticky pistons received a 1-tick on-pulse should push a block but &lt;b&gt;shouldn&apos;t&lt;/b&gt; pull it back. Since an observer block emits a 1-tick pulse, it should be able to cause this phenomenon. However in 0.15.0 beta build 1, sticky pistons &lt;b&gt;do&lt;/b&gt; pull a block even when it pushed a block 1 tick before that.&lt;/p&gt;</description>
            <key id="142513">MCPE-14851</key>
            <summary>Sticky pistons can pull a block 1 tick after pushing one</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>
                                            <reporter username="Redstone and piston">redstone</reporter>
                        <labels>
                    </labels>
                <created>Sun, 5 Jun 2016 04:14:11 +0200</created>
                <updated>Mon, 6 Nov 2023 11:44:32 +0100</updated>
                            <resolved>Fri, 17 Jun 2016 10:52:38 +0200</resolved>
                                    <version>0.15.0 Beta build 1</version>
                    <version>0.15.0</version>
                                                                        <votes>1</votes>
                                    <watches>9</watches>
                                                                            <comments>
                            <comment id="704392" author="okojo" created="Fri, 22 May 2020 21:42:30 +0200"  >&lt;p&gt;&quot;But they added, If the community can find a unique goal which is impossible to achieve without the toggleable sticky piston, and that goal makes sense in the world of Minecraft, then they&apos;ll probably rethink about it.&quot;&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;2-way flying machine contraptions are far harder (even impossible in many cases) to make without this feature. The fact that I can&apos;t use 1 sticky piston to push and pull the machine makes small 2-way flying machines difficult, and large ones impossible (without additional external contraptions that modify the flying machine to reverse the direction).&lt;/p&gt;</comment>
                            <comment id="407760" author="wclucas42" created="Thu, 21 Sep 2017 21:51:43 +0200"  >&lt;p&gt;I agree this is unfortunate.  This exact inverse of this bug for the java edition was resolved as works as intended.  The large majority of tutorials are for the java edition and won&apos;t translate to this new version. Finally our Xbox one console world, should you ever be able to successfully update it is going to be hosed.&lt;/p&gt;</comment>
                            <comment id="314859" author="siphio" created="Sun, 19 Jun 2016 18:32:09 +0200"  >&lt;p&gt;This is an unfortunate &quot;working as intended&quot;. It significantly increases the difficulty and size of toggle switches, and causes unexpected behaviour when moving between versions. &lt;/p&gt;</comment>
                            <comment id="314323" author="depressed-pho" created="Fri, 17 Jun 2016 10:52:38 +0200"  >&lt;p&gt;I asked the developers about this issue. They said the &quot;feature&quot; in PC was intentionally removed from PE just like quasi-connectivity, because leaving a block behind on 1 redstone tick would require you to use repeaters everywhere, and destroy all normal builds.&lt;/p&gt;

&lt;p&gt;But they added, If the community can find a unique goal which is impossible to achieve without the toggleable sticky piston, and that goal makes sense in the world of Minecraft, then they&apos;ll probably rethink about it.&lt;/p&gt;

&lt;p&gt;So the conclusion is, this is currently an intended behavior of sticky pistons in MCPE, but things may change in the future.&lt;/p&gt;

&lt;p&gt;P.S.&lt;br/&gt;
There is already a working 3x3 piston door built in MCPE 0.15.0. I was very surprised at it because I believed it was impossible without this behavior: &lt;a href=&quot;https://youtu.be/XWbboYxqdZM&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://youtu.be/XWbboYxqdZM&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="314078" author="depressed-pho" created="Thu, 16 Jun 2016 07:39:02 +0200"  >&lt;p&gt;&lt;b&gt;Confirmed&lt;/b&gt; in 0.15.0 / iOS.&lt;br/&gt;
In the screenshot shown below, there is a 1 tick on-pulse generator connected to a sticky piston. When it&apos;s triggered the piston should leave the wood without pulling it back but currently the piston does pull the wood.&lt;br/&gt;
&lt;span class=&quot;image-wrap&quot; style=&quot;&quot;&gt;&lt;a id=&quot;120022_thumb&quot; href=&quot;https://bugs.mojang.com/secure/attachment/120022/120022_sticky-1tick-pulse.png&quot; title=&quot;sticky-1tick-pulse.png&quot; file-preview-type=&quot;image&quot; file-preview-id=&quot;120022&quot; file-preview-title=&quot;sticky-1tick-pulse.png&quot;&gt;&lt;img src=&quot;https://bugs.mojang.com/secure/thumbnail/120022/_thumb_120022.png&quot; style=&quot;border: 0px solid black&quot; role=&quot;presentation&quot;/&gt;&lt;/a&gt;&lt;/span&gt;&lt;br/&gt;
The reason why I didn&apos;t use an observer block to generate the 1 tick pulse is that I wanted to ensure it wasn&apos;t the observer&apos;s fault.&lt;/p&gt;</comment>
                            <comment id="310476" author="depressed-pho" created="Sun, 5 Jun 2016 06:05:00 +0200"  >&lt;p&gt;Yes. I understood it. Thank you very much.&lt;br/&gt;
I updated the description and reopened the issue.&lt;br/&gt;
&#12399;&#12356;&#12290;&#33391;&#12367;&#12431;&#12363;&#12426;&#12414;&#12375;&#12383;&#12290;&#12393;&#12358;&#12418;&#12354;&#12426;&#12364;&#12392;&#12358;&#12290;&lt;br/&gt;
&#35500;&#26126;&#27396;&#12434;&#32232;&#38598;&#12375;&#12390; reopen &#12375;&#12414;&#12375;&#12383;&#12290;&lt;/p&gt;</comment>
                            <comment id="310473" author="redstone and piston" created="Sun, 5 Jun 2016 06:01:36 +0200"  >&lt;p&gt;&#20693;&#12398;&#35500;&#26126;&#20998;&#12363;&#12387;&#12390;&#12356;&#12383;&#12384;&#12365;&#12414;&#12375;&#12383;&#12363;&#65311;&lt;/p&gt;</comment>
                            <comment id="310467" author="depressed-pho" created="Sun, 5 Jun 2016 05:43:20 +0200"  >&lt;p&gt;Okay thanks! I&apos;ll update the description.&lt;/p&gt;</comment>
                            <comment id="310466" author="redstone and piston" created="Sun, 5 Jun 2016 05:42:10 +0200"  >&lt;p&gt;&#23455;&#38555;&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://mobile.twitter.com/iPhone6sUser/status/739300727420387333&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://mobile.twitter.com/iPhone6sUser/status/739300727420387333&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="310464" author="redstone and piston" created="Sun, 5 Jun 2016 05:37:53 +0200"  >&lt;p&gt;1&#12486;&#12451;&#12483;&#12463;&#12497;&#12523;&#12473;&#12398;&#20449;&#21495;&#12434;&#31896;&#30528;&#12500;&#12473;&#12488;&#12531;&#12395;&#19982;&#12383;&#12425;&#12289;PC&#29256;&#12394;&#12425;&#12500;&#12473;&#12488;&#12531;&#12364;&#12502;&#12525;&#12483;&#12463;&#12434;&#25276;&#12375;&#12390;&#12381;&#12398;&#12414;&#12414;&#12502;&#12525;&#12483;&#12463;&#12434;&#24341;&#12387;&#24373;&#12425;&#12378;&#12395;&#32622;&#12356;&#12390;&#12356;&#12367;&#12399;&#12378;&#12394;&#12435;&#12391;&#12377;&lt;br/&gt;
&#12364;&#12289;&#20998;&#12363;&#12426;&#12395;&#12367;&#12356;&#12392;&#24605;&#12358;&#12398;&#12391;&#30011;&#20687;&#12434;&#36028;&#12387;&#12390;&#32622;&#12365;&#12414;&#12377;&lt;br/&gt;
&#29702;&#24819;&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://mobile.twitter.com/iPhone6sUser/status/739294787132489728&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://mobile.twitter.com/iPhone6sUser/status/739294787132489728&lt;/a&gt;&lt;/p&gt;


</comment>
                            <comment id="310443" author="aman4700" created="Sun, 5 Jun 2016 04:50:48 +0200"  >&lt;p&gt;&lt;b&gt;This issue works as intended.&lt;/b&gt; If you have a request for &lt;em&gt;Minecraft Pocket Edition&lt;/em&gt;, please go to the &lt;a href=&quot;http://www.minecraftforum.net/forums/minecraft-pocket-edition/mcpe-discussion/mcpe-suggestions&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&lt;em&gt;Minecraft Forums -&amp;gt; MCPE: Suggestions.&lt;/em&gt;&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;The observer gives out a one tick pulse.&lt;/p&gt;</comment>
                            <comment id="310438" author="depressed-pho" created="Sun, 5 Jun 2016 04:30:58 +0200"  >&lt;p&gt;I&apos;m sorry to say this but your description of the bug is pretty hard to comprehend. Could you describe it in Japanese so that I can translate?&lt;br/&gt;
&#30003;&#12375;&#35379;&#12394;&#12356;&#12398;&#12391;&#12377;&#12364;&#12354;&#12394;&#12383;&#12398;&#35500;&#26126;&#12399;&#12363;&#12394;&#12426;&#35299;&#12426;&#12395;&#12367;&#12356;&#12418;&#12398;&#12391;&#12377;&#12290;&#31169;&#12364;&#20195;&#12431;&#12426;&#12395;&#32763;&#35379;&#12377;&#12427;&#12398;&#12391;&#12289;&#26085;&#26412;&#35486;&#12391;&#35500;&#26126;&#12375;&#12390;&#38914;&#12369;&#12414;&#12377;&#12363;&#65311;&lt;/p&gt;</comment>
                            <comment id="310433" author="redstone and piston" created="Sun, 5 Jun 2016 04:18:40 +0200"  >&lt;p&gt;This only can be replaced by BUD block ...&lt;/p&gt;</comment>
                            <comment id="310432" author="redstone and piston" created="Sun, 5 Jun 2016 04:17:17 +0200"  >&lt;p&gt;But the nature of the pressure-sensitive adhesive piston go put the signal is short the block is used in a lot of things ...&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10102">
                    <name>Duplicate</name>
                                                                <inwardlinks description="is duplicated by">
                                        <issuelink>
            <issuekey id="323118">BDS-5355</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="142109">MCPE-14561</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="143490">MCPE-15310</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="144227">MCPE-15686</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="151044">MCPE-17341</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="179767">MCPE-25582</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="192526">MCPE-30974</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="357016">MCPE-92606</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="432490">MCPE-125534</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="545601">MCPE-176724</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                    </issuelinks>
                <attachments>
                            <attachment id="118728" name="image.jpeg" size="147643" author="Redstone and piston" created="Sun, 5 Jun 2016 04:14:11 +0200"/>
                            <attachment id="118727" name="image.jpeg" size="148018" author="Redstone and piston" created="Sun, 5 Jun 2016 04:14:11 +0200"/>
                            <attachment id="118726" name="image.jpeg" size="155975" author="Redstone and piston" created="Sun, 5 Jun 2016 04:14:11 +0200"/>
                            <attachment id="120022" name="sticky-1tick-pulse.png" size="1624624" author="depressed-pho" created="Thu, 16 Jun 2016 07:39:02 +0200"/>
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