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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-9363] Rows of Vertical Down Piston Extenders have a &gt;50% failure rate</title>
                <link>https://bugs.mojang.com/browse/MC-9363</link>
                <project id="10400" key="MC">Minecraft: Java Edition</project>
                    <description>&lt;p&gt;When pistons are lined up in a row, facing downward (useful for portcullis) more then half of the second set of pistons fire out of order and it creates a graphical glitch as well.  When the block next to the piston is powered it is more likely to power the piston below it then the piston next to it, this is counter intuitive and not how it acts in 1.4.7.  This bug was reported several times for last snapshot but always got tagged as being a duplicate for another unrelated bug that is reported as fixed.&lt;/p&gt;</description>
                <environment></environment>
        <key id="22953">MC-9363</key>
            <summary>Rows of Vertical Down Piston Extenders have a &gt;50% failure rate</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="jeb">[Mojang] Jeb (Jens Bergensten)</assignee>
                                    <reporter username="sventheslayer">Ray Kohler</reporter>
                        <labels>
                            <label>BUD</label>
                            <label>block-update</label>
                            <label>extend</label>
                            <label>piston</label>
                            <label>redstone</label>
                    </labels>
                <created>Thu, 7 Feb 2013 21:36:03 +0100</created>
                <updated>Sun, 6 Sep 2015 22:32:29 +0200</updated>
                            <resolved>Fri, 1 Mar 2013 10:47:09 +0100</resolved>
                                    <version>Snapshot 13w05b</version>
                    <version>Snapshot 13w06a</version>
                    <version>Snapshot 13w07a</version>
                    <version>Snapshot 13w09a</version>
                    <version>Snapshot 13w09b</version>
                                    <fixVersion>Snapshot 13w09c</fixVersion>
                                                        <votes>2</votes>
                                    <watches>4</watches>
                                                                            <comments>
                            <comment id="66530" author="evilgangsta2" created="Mon, 13 May 2013 15:05:59 +0200"  >&lt;p&gt;just another screenshot looking at the other side of the previous one I attached.&lt;/p&gt;</comment>
                            <comment id="66527" author="evilgangsta2" created="Mon, 13 May 2013 15:01:42 +0200"  >&lt;p&gt;I can confirm the comment of MG127 within the latest snapshot with this screenshot. No doubt still occurs.&lt;/p&gt;</comment>
                            <comment id="66446" author="kumasasa" created="Sun, 12 May 2013 23:55:57 +0200"  >&lt;p&gt;Can anyone confirm the comment of MG127 ?&lt;/p&gt;</comment>
                            <comment id="66309" author="mg127" created="Sun, 12 May 2013 13:40:11 +0200"  >&lt;p&gt;are you sure that this is 100% fixed?&lt;br/&gt;
&lt;a href=&quot;http://youtu.be/Q-AOr8dD2F4?t=29s&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://youtu.be/Q-AOr8dD2F4?t=29s&lt;/a&gt;&lt;br/&gt;
maybe i&apos;ll just open another issue for that&lt;/p&gt;</comment>
                            <comment id="49075" author="downunderit" created="Sat, 2 Mar 2013 16:08:50 +0100"  >&lt;p&gt;@jeb thanks for addressing this, I was worried it was hidden with so few votes. Now onto &lt;a href=&quot;https://bugs.mojang.com/browse/MC-9460&quot; title=&quot;Piston retracting disapears if pushed out by another piston&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-9460&quot;&gt;&lt;del&gt;MC-9460&lt;/del&gt;&lt;/a&gt;. It&apos;s a good start.&lt;/p&gt;</comment>
                            <comment id="48727" author="rumkugel13" created="Fri, 1 Mar 2013 17:57:45 +0100"  >&lt;p&gt;Its already reported: &lt;a href=&quot;https://bugs.mojang.com/browse/MC-9460&quot; title=&quot;Piston retracting disapears if pushed out by another piston&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-9460&quot;&gt;&lt;del&gt;MC-9460&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="48718" author="sventheslayer" created="Fri, 1 Mar 2013 17:46:50 +0100"  >&lt;p&gt;I can confirm, this is working as of 13w09c.  I was a little worried when the stable example was a horizontal extender but all of my vertical tests work fine.  I did find a new piston deleting bug though, I will report that when I have time.&lt;/p&gt;</comment>
                            <comment id="48580" author="jeb" created="Fri, 1 Mar 2013 10:47:09 +0100"  >&lt;p&gt;Marking this as fixed now. This example is stable: &lt;a href=&quot;http://imgur.com/a/9FMnX&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://imgur.com/a/9FMnX&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="48404" author="jeb" created="Thu, 28 Feb 2013 19:44:06 +0100"  >&lt;p&gt;I think this is fixed now, will check tomorrow.&lt;/p&gt;</comment>
                            <comment id="48060" author="downunderit" created="Wed, 27 Feb 2013 20:37:40 +0100"  >&lt;p&gt;@Ray Kohler I know, not feeling like this is been seen. Trying to spread the word on the forums but getting no love. More people need to up vote this.&lt;/p&gt;</comment>
                            <comment id="47999" author="sventheslayer" created="Wed, 27 Feb 2013 18:07:21 +0100"  >&lt;p&gt;And still broken as of 13w09b, with the pre-release this week if this bug isn&apos;t noticed and fix there is a good chance it will make it into the official 1.5 release.&lt;/p&gt;</comment>
                            <comment id="47968" author="downunderit" created="Wed, 27 Feb 2013 16:31:18 +0100"  >&lt;p&gt;The simple horazontal piston test. 2 rows of pistons powers from above. Powering this setup in v1.4.7 and below will result in the second row of pistons being pushed out before extending themselves. The snapshots leading up to the 1.5 update including 13w09a still result in every second piston extending inconsistently. Adding extra sceenshots.&lt;/p&gt;</comment>
                            <comment id="47760" author="sventheslayer" created="Tue, 26 Feb 2013 19:29:10 +0100"  >&lt;p&gt;Still broken as of 13w09a.  If this gets overlooked and makes it into the official release of 1.5 I will be really, annoyed.&lt;/p&gt;

&lt;p&gt;@Manuel, yes I do think it&apos;s a bud related glitch.&lt;br/&gt;
@Charles, 1.5 has also changed timing in redstone circuits so some repeaters may need adjusted.  My 2 wide secret stairs worked after I added 1 tick extra delay to two repeaters.&lt;/p&gt;</comment>
                            <comment id="47364" author="z3r0gk" created="Sun, 24 Feb 2013 10:54:21 +0100"  >&lt;p&gt;13w07a....I try to do that Secret stair case by CNBMinecraft, and then some sticky pistons won&apos;t retract eachother or push eachother. When trying to get the stairs going like in the videos, the pistons just stay stuck or wont seem to retract at all.&lt;/p&gt;</comment>
                            <comment id="46770" author="rumkugel13" created="Wed, 20 Feb 2013 20:39:14 +0100"  >&lt;p&gt;i think it&apos;s related to &lt;a href=&quot;https://bugs.mojang.com/browse/MC-108&quot; title=&quot;Droppers, Dispensers and Pistons activate when blocks are providing power diagonally or two blocks above&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-108&quot;&gt;&lt;del&gt;MC-108&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="45731" author="sventheslayer" created="Thu, 14 Feb 2013 18:57:18 +0100"  >&lt;p&gt;Still broken as of 13w7a&lt;/p&gt;</comment>
                            <comment id="45657" author="kumasasa" created="Thu, 14 Feb 2013 08:13:04 +0100"  >&lt;p&gt;&lt;del&gt;Resolved as duplicate of &lt;a href=&quot;https://bugs.mojang.com/browse/MC-8992&quot; title=&quot;similar to MC-127 but is not fixed in minecraft 13w05b&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-8992&quot;&gt;&lt;del&gt;MC-8992&lt;/del&gt;&lt;/a&gt;&lt;/del&gt; Nevermind&lt;/p&gt;</comment>
                            <comment id="45208" author="downunderit" created="Mon, 11 Feb 2013 07:47:59 +0100"  >&lt;p&gt;Yes, as the other piston pushing piston bug, that resulted in the graphics glitch was fixed to an extent. In my 13w06a tests, a horizontal array of pistons powered from above will only activate every second piston. This kills any hidden stairways and my horizontal feed portcullis.  &lt;/p&gt;</comment>
                            <comment id="44324" author="rumkugel13" created="Thu, 7 Feb 2013 22:00:02 +0100"  >&lt;p&gt;i can confirm this, its also horizontal&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10101">
                    <name>Cloners</name>
                                                                <inwardlinks description="is cloned by">
                                        <issuelink>
            <issuekey id="31356">MC-15616</issuekey>
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                            <issuelinktype id="10102">
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            <issuekey id="22393">MC-8992</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="23465">MC-9727</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="23577">MC-9824</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="23708">MC-9937</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="24074">MC-10197</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="24097">MC-10212</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="24519">MC-10557</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                    </issuelinks>
                <attachments>
                            <attachment id="21313" name="2013-01-31_12.50.44.png" size="400093" author="sventheslayer" created="Thu, 7 Feb 2013 21:36:03 +0100"/>
                            <attachment id="21314" name="2013-01-31_12.51.37.png" size="421835" author="sventheslayer" created="Thu, 7 Feb 2013 21:36:03 +0100"/>
                            <attachment id="21315" name="2013-01-31_12.52.03.png" size="725523" author="sventheslayer" created="Thu, 7 Feb 2013 21:36:03 +0100"/>
                            <attachment id="21346" name="2013-02-07_17.48.16.png" size="453955" author="rumkugel13" created="Fri, 8 Feb 2013 10:57:49 +0100"/>
                            <attachment id="21347" name="2013-02-07_17.48.19.png" size="444225" author="rumkugel13" created="Fri, 8 Feb 2013 10:57:49 +0100"/>
                            <attachment id="29505" name="2013-05-13_22.57.22_2.png" size="359385" author="evilgangsta2" created="Mon, 13 May 2013 15:01:42 +0200"/>
                            <attachment id="29506" name="2013-05-13_23.02.55.png" size="237729" author="evilgangsta2" created="Mon, 13 May 2013 15:05:59 +0200"/>
                            <attachment id="22578" name="simple-horz-1.jpg" size="57647" author="downunderit" created="Wed, 27 Feb 2013 16:31:18 +0100"/>
                            <attachment id="22579" name="simple-horz-2.jpg" size="92666" author="downunderit" created="Wed, 27 Feb 2013 16:33:52 +0100"/>
                            <attachment id="22580" name="simple-horz-3.jpg" size="63074" author="downunderit" created="Wed, 27 Feb 2013 16:38:36 +0100"/>
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