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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-9714] Cut redstone doesn&apos;t de-power for one tick</title>
                <link>https://bugs.mojang.com/browse/MC-9714</link>
                <project id="10400" key="MC">Minecraft: Java Edition</project>
                    <description>&lt;p&gt;When cutting/breaking redstone wire, the portion of the wire that is no longer connected to the power source remains powered even though the line has been cut.&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;http://www.youtube.com/watch?v=5UNpLokCduo&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://www.youtube.com/watch?v=5UNpLokCduo&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Narrative:&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;http://www.youtube.com/watch?v=Jk1rp8FmJN8&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://www.youtube.com/watch?v=Jk1rp8FmJN8&lt;/a&gt;&lt;/p&gt;</description>
                <environment></environment>
        <key id="23451">MC-9714</key>
            <summary>Cut redstone doesn&apos;t de-power for one tick</summary>
                <type id="1" iconUrl="https://bugs.mojang.com/secure/viewavatar?size=xsmall&amp;avatarId=18903&amp;avatarType=issuetype">Bug</type>
                                    <status id="4" iconUrl="https://bugs.mojang.com/images/icons/statuses/reopened.png" description="This issue was once resolved, but the resolution was deemed incorrect. From here issues are either marked assigned or resolved.">Reopened</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="themaskedcrusader">Topher Donovan</reporter>
                        <labels>
                            <label>redstone</label>
                    </labels>
                <created>Wed, 13 Feb 2013 17:17:11 +0100</created>
                <updated>Mon, 5 Feb 2024 19:39:57 +0100</updated>
                                            <version>Snapshot 13w05b</version>
                    <version>Snapshot 13w06a</version>
                    <version>Minecraft 1.5</version>
                    <version>Minecraft 1.5.1</version>
                    <version>Minecraft 1.5.2</version>
                    <version>Snapshot 13w18c</version>
                    <version>Snapshot 13w19a</version>
                    <version>Minecraft 1.8.1-pre3</version>
                    <version>Minecraft 1.8.8</version>
                    <version>Minecraft 15w49b</version>
                    <version>Minecraft 1.9.4</version>
                    <version>Minecraft 1.10.2</version>
                    <version>Minecraft 16w32b</version>
                    <version>Minecraft 16w44a</version>
                    <version>Minecraft 1.11 Pre-Release 1</version>
                    <version>Minecraft 1.11</version>
                    <version>Minecraft 16w50a</version>
                    <version>Minecraft 1.11.1</version>
                    <version>Minecraft 1.11.2</version>
                    <version>Minecraft 17w06a</version>
                    <version>Minecraft 17w13b</version>
                    <version>Minecraft 17w15a</version>
                    <version>Minecraft 17w16b</version>
                    <version>Minecraft 17w17b</version>
                    <version>Minecraft 17w18b</version>
                    <version>Minecraft 1.12 Pre-Release 2</version>
                    <version>20w07a</version>
                    <version>1.16.1</version>
                    <version>1.16.2 Pre-release 1</version>
                    <version>1.16.2 Pre-release 2</version>
                    <version>1.16.2 Release Candidate 1</version>
                    <version>1.16.2</version>
                    <version>20w51a</version>
                    <version>1.17.1 Release Candidate 1</version>
                    <version>1.17.1</version>
                    <version>1.20.4</version>
                    <version>24w05b</version>
                                                                        <votes>19</votes>
                                    <watches>14</watches>
                                                                            <comments>
                            <comment id="1029563" author="JIRAUSER648933" created="Sun, 4 Jul 2021 16:15:57 +0200"  >&lt;p&gt;Can confirm in 1.17.1 Release Candidate 1.&lt;/p&gt;</comment>
                            <comment id="895933" author="JIRAUSER566325" created="Thu, 14 Jan 2021 19:41:42 +0100"  >&lt;p&gt;Can confirm in 20w51a.&lt;/p&gt;</comment>
                            <comment id="634658" author="redstonehelper" created="Sat, 15 Feb 2020 18:16:56 +0100"  >&lt;p&gt;Can still reproduce in 20w07a. Attaching screenshot.&lt;/p&gt;</comment>
                            <comment id="634538" author="greymagic27" created="Sat, 15 Feb 2020 15:46:32 +0100"  >&lt;p&gt;I can&apos;t reproduce this in 20w07a, there&apos;s a tiny black flicker of the redstone indicating that power has been cut. &lt;/p&gt;</comment>
                            <comment id="411235" author="schortan" created="Fri, 6 Oct 2017 12:53:22 +0200"  >&lt;p&gt;If it was a game tick, a piston would react to the signal if you placed it where the repeater is (and remove the block below). It does not react. It is true, that pistons usually react to 0 ticks, that kind of 0 tick is however even too short for a piston to react.&lt;/p&gt;</comment>
                            <comment id="411234" author="JIRAUSER71590" created="Fri, 6 Oct 2017 12:48:39 +0200"  >&lt;p&gt;It is correct in the sense of game ticks.&lt;/p&gt;

&lt;p&gt;Marking as related instead.&lt;/p&gt;</comment>
                            <comment id="411232" author="schortan" created="Fri, 6 Oct 2017 12:31:11 +0200"  >&lt;p&gt;Okay reviewing the ticket, from the screenshots:&lt;br/&gt;
 &lt;span class=&quot;image-wrap&quot; style=&quot;&quot;&gt;&lt;a id=&quot;29916_thumb&quot; href=&quot;https://bugs.mojang.com/secure/attachment/29916/29916_2013-05-20_17.43.26.png&quot; title=&quot;2013-05-20_17.43.26.png&quot; file-preview-type=&quot;image&quot; file-preview-id=&quot;29916&quot; file-preview-title=&quot;2013-05-20_17.43.26.png&quot;&gt;&lt;img src=&quot;https://bugs.mojang.com/secure/thumbnail/29916/_thumb_29916.png&quot; style=&quot;border: 0px solid black&quot; role=&quot;presentation&quot;/&gt;&lt;/a&gt;&lt;/span&gt; &lt;br/&gt;
It is not true that the redstone dust stays on for one game tick. The repeater will update, but it is actually a 0 tick. So this issue should be marked as Dupe of &lt;a href=&quot;https://bugs.mojang.com/browse/MC-8328&quot; title=&quot;Powered mechanisms react when receiving a 0 tick redstone signal (existence of micro-pulses in general / inconsistent block update &amp;#39;algorithm&amp;#39;)&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-8328&quot;&gt;MC-8328&lt;/a&gt;.&lt;/p&gt;</comment>
                            <comment id="395300" author="schortan" created="Sun, 23 Jul 2017 21:45:30 +0200"  >&lt;p&gt;I just tested the bug with the simple design of the two high smart piston from the video. In the current version, 1.12, it is not the case anymore, that the redstone dust doesn&apos;t get unpowered.&lt;br/&gt;
It is true, that the two high smart piston does not work in that way anymore, but that is not because the redstone dust doesn&apos;t get unpowered, it&apos;s because the off pulse is too short for the torch to react. If you attach a dropper directly to the output, it will fire.&lt;br/&gt;
So while the behavior compared to 1.4 obviously changed I do not think, this should be considered a bug. The redstone wire changes state as expected and I assume that the created pulse is actually a 0 tick pulse which means, it is too short for even a 1 tick repeater to react.&lt;/p&gt;

&lt;p&gt;An alternative design that works similar can be seen here: &lt;span class=&quot;nobr&quot;&gt;&lt;a href=&quot;https://bugs.mojang.com/secure/attachment/143514/143514_MC-9714.png&quot; title=&quot;MC-9714.png attached to MC-9714&quot;&gt;MC-9714.png&lt;sup&gt;&lt;img class=&quot;rendericon&quot; src=&quot;https://bugs.mojang.com/images/icons/link_attachment_7.gif&quot; height=&quot;7&quot; width=&quot;7&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt;&lt;/sup&gt;&lt;/a&gt;&lt;/span&gt;&lt;/p&gt;</comment>
                            <comment id="349491" author="themaskedcrusader" created="Tue, 20 Dec 2016 22:01:28 +0100"  >&lt;p&gt;disregarding my comments from before, I wonder how fixing this bug would speed up some redstone contraptions?? hmmm....&lt;/p&gt;</comment>
                            <comment id="304566" author="suncat" created="Sat, 14 May 2016 14:09:04 +0200"  >&lt;p&gt;Still in 1.9.4 (&quot;on&quot; and &quot;off&quot; screenshots, same contraption but in different directions/mirrored, diamond blocks moved, gold blocks didn&apos;t)&lt;/p&gt;</comment>
                            <comment id="270781" author="fm22" created="Sun, 6 Dec 2015 19:40:34 +0100"  >&lt;p&gt;This is a bit like quasi connectivity IMO as it is useful for pulse limiters.&lt;/p&gt;</comment>
                            <comment id="270769" author="themaskedcrusader" created="Sun, 6 Dec 2015 18:24:09 +0100"  >&lt;p&gt;Still an issue. It last worked in release 1.4.7, Has been broken since 1.5.0. &lt;/p&gt;

&lt;p&gt;But it&apos;s nearly been three years, so what&apos;s the point of fixing it? Everyone&apos;s already gotten used to this particular redstone mechanic, so fixing it would probably create even more tickets&lt;/p&gt;</comment>
                            <comment id="205454" author="galaxy_2alex" created="Sat, 25 Oct 2014 18:22:36 +0200"  >&lt;p&gt;Reopened, thanks. It&apos;s still an issue nontheless.&lt;/p&gt;</comment>
                            <comment id="205450" author="themaskedcrusader" created="Sat, 25 Oct 2014 18:18:42 +0200"  >&lt;p&gt;Sorry, For some reason, I didn&apos;t see the updates in my email. I just tested it and it is still present in 1.8.1-pre3, but since the rest of the redstone community isn&apos;t complaining about it, perhaps it just isn&apos;t something that&apos;s supposed to be fixed. &lt;/p&gt;</comment>
                            <comment id="67587" author="bljat" created="Mon, 20 May 2013 17:46:21 +0200"  >&lt;p&gt;Confirmed with the setup and orientation seen in the screenshot.&lt;/p&gt;</comment>
                            <comment id="54956" author="themaskedcrusader" created="Mon, 18 Mar 2013 04:03:31 +0100"  >&lt;p&gt;Yes, the error is still present in 1.5&lt;/p&gt;</comment>
                            <comment id="49172" author="themaskedcrusader" created="Sat, 2 Mar 2013 21:13:57 +0100"  >&lt;p&gt;Dear Dico Karssiens, This is NOT a pre-existing bug and I can prove it.&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;http://www.youtube.com/watch?v=Jk1rp8FmJN8&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://www.youtube.com/watch?v=Jk1rp8FmJN8&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;This video illustrates the difference between the redstone getting cut in 1.4.7 and the pre-releases of 13w0x.  Something has indeed changed and it has to be looked at. I&apos;m sure that this is not the only use case where powered redstone getting cut needs to be consistent. &lt;/p&gt;

&lt;p&gt;Also, if you watch the video, there is NO repeater in this setup. it&apos;s very simple.&lt;/p&gt;</comment>
                            <comment id="47579" author="dicotheredstoner" created="Mon, 25 Feb 2013 18:34:29 +0100"  >&lt;p&gt;Its actually not the redstone not getting de-powered for 1 tick.&lt;br/&gt;
Its just the repeater taking a signal from it.&lt;br/&gt;
If you set this up with 2 repeaters coming from the block&lt;br/&gt;
in each orientation, you will see that some do take a signal and some dont.&lt;br/&gt;
So its not the dust&apos;s fault, its the repeater&apos;s fault.&lt;/p&gt;</comment>
                            <comment id="47348" author="themaskedcrusader" created="Sun, 24 Feb 2013 08:36:36 +0100"  >&lt;p&gt;Just to be super explicit about it, The cut wire DOES eventually de power, but shouldn&apos;t it de-power immediately, not wait a tick or two?&lt;/p&gt;</comment>
                            <comment id="45635" author="themaskedcrusader" created="Thu, 14 Feb 2013 03:18:27 +0100"  >&lt;p&gt;This now happens in all directions. I built a 30 second timer that required the redstone to cut properly, but since 13w0x, it doesn&apos;t work./&lt;/p&gt;

&lt;p&gt;Images won&apos;t do it justice, I uploaded a video in the description which illustrates the error. And the piston/wire in the video is from one of my other videos where I show it working properly.&lt;/p&gt;</comment>
                            <comment id="45603" author="kumasasa" created="Wed, 13 Feb 2013 23:23:39 +0100"  >&lt;p&gt;Please attach the images to that ticket.&lt;/p&gt;</comment>
                            <comment id="45602" author="dicotheredstoner" created="Wed, 13 Feb 2013 23:22:13 +0100"  >&lt;p&gt;An orientational shift register relied on this. Here&apos;s a setup to easily see what happens (in 1 of 2 orientations):&lt;br/&gt;
Setup: &lt;a href=&quot;https://www.dropbox.com/s/cd5aag78gz556rm/2013-02-13_23.18.16.png&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://www.dropbox.com/s/cd5aag78gz556rm/2013-02-13_23.18.16.png&lt;/a&gt;&lt;br/&gt;
When powered: &lt;a href=&quot;https://www.dropbox.com/s/3djwzq1q131bvfp/2013-02-13_23.18.04.png?m&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://www.dropbox.com/s/3djwzq1q131bvfp/2013-02-13_23.18.04.png?m&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="45600" author="dicotheredstoner" created="Wed, 13 Feb 2013 23:16:09 +0100"  >&lt;p&gt;I&apos;ve seen this for a long time, it only happens in 1 orientation.&lt;/p&gt;</comment>
                            <comment id="45535" author="themaskedcrusader" created="Wed, 13 Feb 2013 17:18:18 +0100"  >&lt;p&gt;Stays powered for about 1 tick, causing multi-leveled smart-pistons to fail.&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10102">
                    <name>Duplicate</name>
                                                                <inwardlinks description="is duplicated by">
                                        <issuelink>
            <issuekey id="164651">MC-114311</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                            <issuelinktype id="10103">
                    <name>Relates</name>
                                            <outwardlinks description="relates to">
                                        <issuelink>
            <issuekey id="21246">MC-8328</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="252589">MC-157644</issuekey>
        </issuelink>
                            </outwardlinks>
                                                                <inwardlinks description="relates to">
                                        <issuelink>
            <issuekey id="25303">MC-11193</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                    </issuelinks>
                <attachments>
                            <attachment id="29916" name="2013-05-20_17.43.26.png" size="328225" author="bljat" created="Mon, 20 May 2013 17:46:21 +0200"/>
                            <attachment id="265790" name="Bildschirmfoto 2020-02-15 um 18.16.19.png" size="960522" author="redstonehelper" created="Sat, 15 Feb 2020 18:17:04 +0100"/>
                            <attachment id="143514" name="MC-9714.png" size="308673" author="Schortan" created="Sun, 23 Jul 2017 21:43:50 +0200"/>
                            <attachment id="117045" name="off.png" size="276438" author="SunCat" created="Sat, 14 May 2016 14:09:04 +0200"/>
                            <attachment id="117046" name="on.png" size="278797" author="SunCat" created="Sat, 14 May 2016 14:09:04 +0200"/>
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