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        <build-date>10-01-2024</build-date>
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<item>
            <title>[MC-1254] Phantom skylight - sunlight appears in impossible areas</title>
                <link>https://bugs.mojang.com/browse/MC-1254</link>
                <project id="10400" key="MC">Minecraft: Java Edition</project>
                    <description>&lt;p&gt;Every chunk is made up of several sections, or so I have heard. When all of a section of a chunk is air blocks, the game seems to forget about that section and doesn&apos;t update its lighting. So, every air block in that section gets sunlight.&lt;/p&gt;

&lt;p&gt;This can be a problem in large caves in normal Minecraft worlds but can especially be a problem in custom maps where large areas are common.&lt;/p&gt;

&lt;p&gt;Tested with and without the OptiFine mod installed. Has been happening since the introduction of the Anvil world format in 1.2. This is not caused because there is a hole to the void. &lt;/p&gt;

&lt;p&gt;To recreate, simply generate a superflat world and create a box around the player that is at least 30 or so blocks tall and a chunk large. Sunlight will most likely appear in the box all the way down to the floor.&lt;/p&gt;</description>
                <environment></environment>
        <key id="12575">MC-1254</key>
            <summary>Phantom skylight - sunlight appears in impossible areas</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="3">Duplicate</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="rajorsonio">rajor sonio</reporter>
                        <labels>
                    </labels>
                <created>Tue, 30 Oct 2012 01:02:29 +0100</created>
                <updated>Sun, 12 Jun 2016 02:18:08 +0200</updated>
                            <resolved>Tue, 30 Oct 2012 16:07:49 +0100</resolved>
                                    <version>Minecraft 1.4.2</version>
                                                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                            <comments>
                            <comment id="15281" author="daedalusyoung" created="Tue, 30 Oct 2012 03:07:30 +0100"  >&lt;p&gt;Duplicate of &lt;a href=&quot;https://bugs.mojang.com/browse/MC-911&quot; title=&quot;Sunlight in big caves and under overhangs&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-911&quot;&gt;&lt;del&gt;MC-911&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;</comment>
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                            <issuelinktype id="10102">
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                                        <issuelink>
            <issuekey id="110931">MC-80966</issuekey>
        </issuelink>
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                            <attachment id="11405" name="PhantomSkylight.png" size="252037" author="rajorsonio" created="Tue, 30 Oct 2012 01:02:29 +0100"/>
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