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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-2110] Projectiles shot at a Nether Portal appear behind it before disappearing to The Nether</title>
                <link>https://bugs.mojang.com/browse/MC-2110</link>
                <project id="10400" key="MC">Minecraft: Java Edition</project>
                    <description>&lt;p&gt;I was just doing some redstoning, and i made a lava arrow trap and put a nether portal in front of it. when it shot, it stayed for 2 seconds then vanished. when i went through the portal the arrows then shot, and stayed there.&lt;/p&gt;

&lt;p&gt;Note: Currently the arrow doesn&apos;t even go to the nether at all, after the delay mentioned here it gets stuck in the portal as mentioned in &lt;a href=&quot;https://bugs.mojang.com/browse/MC-96007&quot; title=&quot;Arrows, trident, projectiles, splash and lingering potions can&amp;#39;t be teleported from directly above the end portal, end gateway and nether portal&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-96007&quot;&gt;&lt;del&gt;MC-96007&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;</description>
                <environment></environment>
        <key id="13502">MC-2110</key>
            <summary>Projectiles shot at a Nether Portal appear behind it before disappearing to The Nether</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="gigabite174">john smith</reporter>
                        <labels>
                    </labels>
                <created>Sat, 3 Nov 2012 16:55:33 +0100</created>
                <updated>Wed, 29 May 2024 16:41:06 +0200</updated>
                                            <version>Minecraft 1.4.2</version>
                    <version>Snapshot 13w03a</version>
                    <version>Minecraft 1.7.1</version>
                    <version>Minecraft 1.7.2</version>
                    <version>Minecraft 1.7.4</version>
                    <version>Minecraft 14w05b</version>
                    <version>Minecraft 1.7.10</version>
                    <version>Minecraft 14w30c</version>
                    <version>Minecraft 14w31a</version>
                    <version>Minecraft 1.8-pre1</version>
                    <version>Minecraft 1.8.8</version>
                    <version>Minecraft 15w36d</version>
                    <version>Minecraft 15w37a</version>
                    <version>Minecraft 1.10.2</version>
                    <version>Minecraft 16w32a</version>
                    <version>Minecraft 16w32b</version>
                    <version>Minecraft 16w33a</version>
                    <version>Minecraft 16w35a</version>
                    <version>Minecraft 17w06a</version>
                    <version>Minecraft 1.12 Pre-Release 6</version>
                    <version>Minecraft 1.12.1</version>
                    <version>Minecraft 1.13.1</version>
                    <version>20w51a</version>
                    <version>21w05b</version>
                    <version>21w07a</version>
                    <version>21w42a</version>
                    <version>1.19</version>
                    <version>1.19.3</version>
                    <version>23w04a</version>
                    <version>23w05a</version>
                    <version>23w06a</version>
                    <version>1.21 Pre-Release 1</version>
                                                                        <votes>19</votes>
                                    <watches>15</watches>
                                                                            <comments>
                            <comment id="1237122" author="JIRAUSER734481" created="Sat, 11 Feb 2023 16:33:59 +0100"  >&lt;p&gt;Can confirm in 23w06a&lt;/p&gt;</comment>
                            <comment id="1234913" author="JIRAUSER734481" created="Wed, 1 Feb 2023 17:06:29 +0100"  >&lt;p&gt;Can confirm in 23w05a&lt;/p&gt;</comment>
                            <comment id="1233510" author="JIRAUSER734481" created="Wed, 25 Jan 2023 08:27:21 +0100"  >&lt;p&gt;Can confirm in 1.19.3 and 23w04a&lt;/p&gt;</comment>
                            <comment id="1180162" author="JIRAUSER566325" created="Wed, 6 Jul 2022 12:23:02 +0200"  >&lt;p&gt;Can confirm in 1.19.&lt;/p&gt;</comment>
                            <comment id="1137815" author="lovexyn0827" created="Wed, 26 Jan 2022 12:08:39 +0100"  >&lt;p&gt;&lt;b&gt;This is why it happens:&lt;/b&gt;&lt;/p&gt;

&lt;p&gt;In Minecraft 1.16.1 and earlier versions, thrown projects checks if the OUTLINE shapes of blocks, to find potential collisions and chances to be teleported (&quot;hit&quot; a nether_portal block, for example)&lt;em&gt;(See ThrowableProjectile.tick())&lt;/em&gt;. A portal has its non-empty OUTLINE shapes though it has no collision box which can stop regular entity movement, so thrown projectiles can always detect if it can be teleported no matter how high their velocity is.&lt;/p&gt;

&lt;p&gt;But in 1.16.2-pre1, something was changed. The&#160; OUTLINE shape get no longer used in collision checks, instead, the COLLIDER shape has been used since then (&lt;em&gt;See ThrowableProjectile.tick() &amp;amp;&#160; ProjectileUtil.getHitResult()&lt;/em&gt;). However, portals has empty COLLIDER shapes, so the teleporting check became dead code. And entities only stays in some seperated points, thus if the velocity of a thrown projectile entity is greater than 1 bloch per tick, it may pass through the portal if it failed to be teleported in the&#160;&lt;em&gt;Entity.handleNetherPortal()&lt;/em&gt;&#160;method.&lt;/p&gt;

&lt;p&gt;&lt;b&gt;Suggestions to solve&lt;/b&gt;&#160;&lt;b&gt;it:&lt;/b&gt;&lt;/p&gt;

&lt;p&gt;The change may be intended to fix&#160;&lt;a href=&quot;https://bugs.mojang.com/browse/MC-73844&quot; title=&quot;no entry crash&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-73844&quot;&gt;&lt;del&gt;MC-73844&lt;/del&gt;&lt;/a&gt;, simply changing it back is not a good idea. But a addional ray trace may be introduced when the speed of the entity is higher than 1 block pre tick, just like what falling_blocks of concrete powder do.&lt;/p&gt;</comment>
                            <comment id="1095770" author="JIRAUSER648933" created="Sat, 23 Oct 2021 21:18:41 +0200"  >&lt;p&gt;Can confirm in 21w42a.&lt;/p&gt;</comment>
                            <comment id="927190" author="JIRAUSER506241" created="Sat, 20 Feb 2021 03:00:03 +0100"  >&lt;p&gt;I can confirm in 21w07a.&lt;/p&gt;</comment>
                            <comment id="914298" author="JIRAUSER566325" created="Fri, 5 Feb 2021 20:59:34 +0100"  >&lt;p&gt;Can confirm in 21w05b.&lt;/p&gt;</comment>
                            <comment id="894115" author="JIRAUSER566325" created="Tue, 12 Jan 2021 10:39:33 +0100"  >&lt;p&gt;Can confirm in 20w51a.&lt;/p&gt;</comment>
                            <comment id="722862" author="JIRAUSER499978" created="Mon, 8 Jun 2020 14:01:21 +0200"  >&lt;p&gt;In 1.16 Pre-release 2, arrows and tridents go through the portal, without teleporting - as if it was air.&lt;/p&gt;</comment>
                            <comment id="484595" author="kraif" created="Fri, 24 Aug 2018 22:27:36 +0200"  >&lt;p&gt;Confirmed for 1.13.1.&lt;/p&gt;</comment>
                            <comment id="324681" author="__null" created="Wed, 10 Aug 2016 19:22:47 +0200"  >&lt;p&gt;It seems that in 16w32a, arrows get &quot;stuck&quot; on the portal as if it&apos;s a solid block. Then they disappear and get teleported.&lt;/p&gt;</comment>
                            <comment id="317610" author="farogaming" created="Sun, 26 Jun 2016 23:54:14 +0200"  >&lt;p&gt;Note to tests in recent versions: Due to another bug, arrows don&apos;t get teleported at all. It&apos;s still possible to test this bug by standing near the portal while shooting. About 2-3 blocks distance is the limit.&lt;/p&gt;</comment>
                            <comment id="248943" author="marcono1234" created="Sat, 12 Sep 2015 17:10:07 +0200"  >&lt;p&gt;Confirmed for&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;&lt;b&gt;15w37a&lt;/b&gt;&lt;/li&gt;
&lt;/ul&gt;
</comment>
                            <comment id="180620" author="marcono1234" created="Sun, 27 Jul 2014 15:20:33 +0200"  >&lt;p&gt;Confirmed for&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;14w30c&lt;/li&gt;
	&lt;li&gt;14w31a&lt;/li&gt;
	&lt;li&gt;&lt;b&gt;Minecraft 1.8-pre 1&lt;/b&gt;&lt;/li&gt;
&lt;/ul&gt;
</comment>
                            <comment id="117939" author="jeuvke" created="Wed, 6 Nov 2013 22:44:49 +0100"  >&lt;p&gt;Still in 1.7.2. The arrows only appear behind the portal for a split second though.&lt;/p&gt;</comment>
                            <comment id="90846" author="kumasasa" created="Sun, 14 Jul 2013 15:14:31 +0200"  >
&lt;p&gt;Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.&lt;/p&gt;
</comment>
                            <comment id="26871" author="kumasasa" created="Fri, 7 Dec 2012 01:14:29 +0100"  >&lt;p&gt;Cameron, if you don&apos;t want to publicly show your email adress , you should better edit your comments in this ticket - and when replying via email at least remove the quoted part...&lt;/p&gt;</comment>
                            <comment id="26870" author="gigabite174" created="Fri, 7 Dec 2012 01:04:26 +0100"  >&lt;p&gt;Ok thank you for notifying me.&lt;/p&gt;</comment>
                            <comment id="26868" author="bljat" created="Fri, 7 Dec 2012 01:02:01 +0100"  >&lt;p&gt;From my tests indeed.&lt;/p&gt;</comment>
                            <comment id="26867" author="gigabite174" created="Fri, 7 Dec 2012 01:00:26 +0100"  >&lt;p&gt;Oh lol so it just a really small graphic glitch and that&apos;s all? &lt;/p&gt;</comment>
                            <comment id="26866" author="bljat" created="Fri, 7 Dec 2012 00:56:31 +0100"  >&lt;p&gt;I see, but this is pure graphical. Small lag while the arrows are loaded into the nether. You neither can pick up those arrows nor do they hurt you.&lt;/p&gt;</comment>
                            <comment id="26862" author="gigabite174" created="Fri, 7 Dec 2012 00:12:26 +0100"  >&lt;p&gt;It only reproduce in the real world for about 2 seconds then vanishes.Did you see it come at you?&lt;/p&gt;</comment>
                            <comment id="26729" author="bljat" created="Wed, 5 Dec 2012 23:10:38 +0100"  >&lt;p&gt;Cannot reproduce, I activate 2 dispensers at the same time, which shoot 2 arrows at the same time and go into the portal at the same time and if I follow I get 2 arrows on the other side.&lt;/p&gt;</comment>
                            <comment id="26721" author="gigabite174" created="Wed, 5 Dec 2012 22:08:26 +0100"  >&lt;p&gt;Yeah, it only duplicates through the portal from a dispenser.&lt;/p&gt;</comment>
                            <comment id="26720" author="gigabite174" created="Wed, 5 Dec 2012 22:07:33 +0100"  >&lt;p&gt;Yeah, it only duplicates through the portal from a dispenser.&lt;/p&gt;</comment>
                            <comment id="26614" author="bljat" created="Tue, 4 Dec 2012 22:38:21 +0100"  >&lt;p&gt;So how exactly do arrows duplicate? Shot arrows go through portals - intended feature.&lt;/p&gt;</comment>
                            <comment id="25447" author="gigabite174" created="Wed, 28 Nov 2012 01:54:46 +0100"  >&lt;p&gt;Yes, the glitch is still in 1.4.5 if you want me to put up the file of the world i can do so.&lt;/p&gt;</comment>
                            <comment id="25444" author="bljat" created="Wed, 28 Nov 2012 01:41:58 +0100"  >&lt;p&gt;Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.&lt;/p&gt;</comment>
                            <comment id="22558" author="gigabite174" created="Sat, 17 Nov 2012 17:55:11 +0100"  >&lt;p&gt;Here are some of the pictures&lt;/p&gt;</comment>
                            <comment id="21082" author="gigabite174" created="Tue, 13 Nov 2012 00:03:58 +0100"  >&lt;p&gt;I made a file because i tried putting up the screenshots but that did not seem to work.&lt;/p&gt;</comment>
                            <comment id="21018" author="mortvert" created="Mon, 12 Nov 2012 20:52:15 +0100"  >&lt;p&gt;Can you please attach some screenshots of that setup? And add more details to the description.&lt;/p&gt;</comment>
                    </comments>
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                            <issuelinktype id="10102">
                    <name>Duplicate</name>
                                                                <inwardlinks description="is duplicated by">
                                        <issuelink>
            <issuekey id="20573">MC-7762</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="72486">MC-46867</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="92800">MC-65326</issuekey>
        </issuelink>
                            </inwardlinks>
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                                                                <inwardlinks description="relates to">
                                        <issuelink>
            <issuekey id="132013">MC-96007</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="360177">MC-196556</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                    </issuelinks>
                <attachments>
                            <attachment id="450269" name="MC-2110.mp4" size="9919020" author="ampolive" created="Sat, 23 Oct 2021 21:23:42 +0200"/>
                            <attachment id="13499" name="The glitch pictures.zip" size="2056277" author="gigabite174" created="Sat, 17 Nov 2012 17:55:11 +0100"/>
                            <attachment id="13043" name="The glitch pictures.zip" size="2056277" author="gigabite174" created="Tue, 13 Nov 2012 00:03:57 +0100"/>
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