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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-2813] Snow doesn&apos;t form / cannot be placed on upside down slabs / stairs</title>
                <link>https://bugs.mojang.com/browse/MC-2813</link>
                <project id="10400" key="MC">Minecraft: Java Edition</project>
                    <description>&lt;p&gt;When you have an upside down slab and it is snowing in the game, the snow will land on whole blocks but not upside down slabs. I believe that this is a bug because you can place red stone, torches, and other things on slabs, but snow doesn&apos;t fall on them.&lt;/p&gt;</description>
                <environment></environment>
        <key id="14593">MC-2813</key>
            <summary>Snow doesn&apos;t form / cannot be placed on upside down slabs / stairs</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="Excited">Maria Lem&#243;n</assignee>
                                    <reporter username="nogluten">Jon-Jacob</reporter>
                        <labels>
                            <label>placement</label>
                            <label>slab</label>
                            <label>snow</label>
                    </labels>
                <created>Sun, 11 Nov 2012 20:10:37 +0100</created>
                <updated>Fri, 29 Dec 2017 23:47:08 +0100</updated>
                            <resolved>Mon, 10 Apr 2017 15:20:48 +0200</resolved>
                                    <version>Minecraft 1.4.2</version>
                    <version>Minecraft 1.4.4</version>
                    <version>Minecraft 1.4.5</version>
                    <version>Minecraft 1.4.6</version>
                    <version>Minecraft 1.4.7</version>
                    <version>Snapshot 13w04a</version>
                    <version>Snapshot 13w05a</version>
                    <version>Snapshot 13w05b</version>
                    <version>Snapshot 13w06a</version>
                    <version>Snapshot 13w07a</version>
                    <version>Snapshot 13w09a</version>
                    <version>Snapshot 13w09b</version>
                    <version>Snapshot 13w09c</version>
                    <version>Snapshot 13w10a</version>
                    <version>Snapshot 13w10b</version>
                    <version>Minecraft 1.5</version>
                    <version>Snapshot 13w11a</version>
                    <version>Minecraft 1.5.1</version>
                    <version>Snapshot 13w16a</version>
                    <version>Snapshot 13w16b</version>
                    <version>Minecraft 1.5.2</version>
                    <version>Snapshot 13w17a</version>
                    <version>Snapshot 13w18b</version>
                    <version>Snapshot 13w18c</version>
                    <version>Snapshot 13w19a</version>
                    <version>Snapshot 13w21a</version>
                    <version>Snapshot 13w21b</version>
                    <version>Snapshot 13w22a</version>
                    <version>Snapshot 13w23a</version>
                    <version>Snapshot 13w23b</version>
                    <version>Snapshot 13w24a</version>
                    <version>Snapshot 13w24b</version>
                    <version>Snapshot 13w25a</version>
                    <version>Snapshot 13w25b</version>
                    <version>Snapshot 13w25c</version>
                    <version>Snapshot 13w26a</version>
                    <version>Minecraft 1.6</version>
                    <version>Minecraft 1.6.1</version>
                    <version>Minecraft 1.6.2</version>
                    <version>Minecraft 1.6.3</version>
                    <version>Minecraft 1.6.4</version>
                    <version>Minecraft 13w36b</version>
                    <version>Minecraft 13w37a</version>
                    <version>Minecraft 13w37b</version>
                    <version>Minecraft 13w38a</version>
                    <version>Minecraft 13w38b</version>
                    <version>Minecraft 13w38c</version>
                    <version>Minecraft 13w39a</version>
                    <version>Minecraft 13w39b</version>
                    <version>Minecraft 13w41a</version>
                    <version>Minecraft 13w41b</version>
                    <version>Minecraft 13w42a</version>
                    <version>Minecraft 13w42b</version>
                    <version>Minecraft 13w43a</version>
                    <version>Minecraft 1.7.1</version>
                    <version>Minecraft 1.7.2</version>
                    <version>Minecraft 13w48a</version>
                    <version>Minecraft 13w48b</version>
                    <version>Minecraft 13w49a</version>
                    <version>Minecraft 1.7.3</version>
                    <version>Minecraft 1.7.4</version>
                    <version>Minecraft 14w02c</version>
                    <version>Minecraft 14w03b</version>
                    <version>Minecraft 14w04a</version>
                    <version>Minecraft 14w04b</version>
                    <version>Minecraft 14w05b</version>
                    <version>Minecraft 14w06b</version>
                    <version>Minecraft 14w07a</version>
                    <version>Minecraft 14w08a</version>
                    <version>Minecraft 1.7.5</version>
                    <version>Minecraft 14w10b</version>
                    <version>Minecraft 14w10c</version>
                    <version>Minecraft 14w11b</version>
                    <version>Minecraft 1.7.9</version>
                    <version>Minecraft 14w17a</version>
                    <version>Minecraft 14w18a</version>
                    <version>Minecraft 14w20b</version>
                    <version>Minecraft 14w21a</version>
                    <version>Minecraft 14w21b</version>
                    <version>Minecraft 1.7.10-pre1</version>
                    <version>Minecraft 1.7.10-pre2</version>
                    <version>Minecraft 1.7.10-pre3</version>
                    <version>Minecraft 14w25a</version>
                    <version>Minecraft 1.7.10-pre4</version>
                    <version>Minecraft 14w25b</version>
                    <version>Minecraft 14w26b</version>
                    <version>Minecraft 14w26c</version>
                    <version>Minecraft 1.7.10</version>
                    <version>Minecraft 14w28a</version>
                    <version>Minecraft 14w28b</version>
                    <version>Minecraft 14w29a</version>
                    <version>Minecraft 14w29b</version>
                    <version>Minecraft 14w30a</version>
                    <version>Minecraft 14w30b</version>
                    <version>Minecraft 14w30c</version>
                    <version>Minecraft 14w31a</version>
                    <version>Minecraft 14w32a</version>
                    <version>Minecraft 14w32b</version>
                    <version>Minecraft 14w32c</version>
                    <version>Minecraft 14w32d</version>
                    <version>Minecraft 14w33a</version>
                    <version>Minecraft 14w33c</version>
                    <version>Minecraft 14w34a</version>
                    <version>Minecraft 14w34b</version>
                    <version>Minecraft 14w34c</version>
                    <version>Minecraft 14w34d</version>
                    <version>Minecraft 1.8-pre1</version>
                    <version>Minecraft 1.8-pre2</version>
                    <version>Minecraft 1.8-pre3</version>
                    <version>Minecraft 1.8</version>
                    <version>Minecraft 1.8.1-pre4</version>
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                    <version>Minecraft 1.8.2-pre4</version>
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                    <version>Minecraft 1.8.3</version>
                    <version>Minecraft 1.8.6</version>
                    <version>Minecraft 1.8.8</version>
                    <version>Minecraft 15w31c</version>
                    <version>Minecraft 15w32a</version>
                    <version>Minecraft 15w32c</version>
                    <version>Minecraft 15w33b</version>
                    <version>Minecraft 15w33c</version>
                    <version>Minecraft 15w34a</version>
                    <version>Minecraft 15w34b</version>
                    <version>Minecraft 15w34c</version>
                    <version>Minecraft 15w34d</version>
                    <version>Minecraft 15w35b</version>
                    <version>Minecraft 15w35d</version>
                    <version>Minecraft 15w35e</version>
                    <version>Minecraft 15w36b</version>
                    <version>Minecraft 15w36c</version>
                    <version>Minecraft 15w36d</version>
                    <version>Minecraft 15w37a</version>
                    <version>Minecraft 15w38a</version>
                    <version>Minecraft 15w38b</version>
                    <version>Minecraft 15w39a</version>
                    <version>Minecraft 15w39b</version>
                    <version>Minecraft 15w39c</version>
                    <version>Minecraft 15w41b</version>
                    <version>Minecraft 15w42a</version>
                    <version>Minecraft 15w43a</version>
                    <version>Minecraft 15w43c</version>
                    <version>Minecraft 15w44a</version>
                    <version>Minecraft 15w44b</version>
                    <version>Minecraft 15w46a</version>
                    <version>Minecraft 15w47a</version>
                    <version>Minecraft 15w47b</version>
                    <version>Minecraft 15w47c</version>
                    <version>Minecraft 15w49a</version>
                    <version>Minecraft 15w49b</version>
                    <version>Minecraft 1.8.9</version>
                    <version>Minecraft 15w50a</version>
                    <version>Minecraft 15w51a</version>
                    <version>Minecraft 15w51b</version>
                    <version>Minecraft 16w02a</version>
                    <version>Minecraft 16w03a</version>
                    <version>Minecraft 16w04a</version>
                    <version>Minecraft 16w05b</version>
                    <version>Minecraft 16w06a</version>
                    <version>Minecraft 16w07a</version>
                    <version>Minecraft 16w07b</version>
                    <version>Minecraft 1.9 Pre-Release 1</version>
                    <version>Minecraft 1.9 Pre-Release 2</version>
                    <version>Minecraft 1.9 Pre-Release 4</version>
                    <version>Minecraft 1.9</version>
                    <version>Minecraft 1.9.1 Pre-Release 1</version>
                    <version>Minecraft 1.9.1 Pre-Release 2</version>
                    <version>Minecraft 1.9.1 Pre-Release 3</version>
                    <version>Minecraft 1.9.1</version>
                    <version>Minecraft 1.9.2</version>
                    <version>Minecraft 16w14a</version>
                    <version>Minecraft 16w15a</version>
                    <version>Minecraft 16w15b</version>
                    <version>Minecraft 1.9.3 Pre-Release 1</version>
                    <version>Minecraft 1.9.3 Pre-Release 2</version>
                    <version>Minecraft 1.9.3 Pre-Release 3</version>
                    <version>Minecraft 1.9.3</version>
                    <version>Minecraft 1.9.4</version>
                    <version>Minecraft 16w20a</version>
                    <version>Minecraft 16w21a</version>
                    <version>Minecraft 16w21b</version>
                    <version>Minecraft 1.10 Pre-Release 1</version>
                    <version>Minecraft 1.10 Pre-Release 2</version>
                    <version>Minecraft 1.10</version>
                    <version>Minecraft 1.10.1</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 16w36a</version>
                    <version>Minecraft 16w38a</version>
                    <version>Minecraft 16w39a</version>
                    <version>Minecraft 16w40a</version>
                    <version>Minecraft 16w41a</version>
                    <version>Minecraft 16w42a</version>
                    <version>Minecraft 16w43a</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 17w14a</version>
                                    <fixVersion>Minecraft 17w15a</fixVersion>
                                                        <votes>41</votes>
                                    <watches>12</watches>
                                                                            <comments>
                            <comment id="299941" author="JIRAUSER71590" created="Wed, 13 Apr 2016 16:13:37 +0200"  >&lt;p&gt;How do you know it affects 16w15b? You can&apos;t download it yet, it&apos;s in the process of being uploaded. (&lt;del&gt;Neither client nor server are downloadable ATM.&lt;/del&gt;)&lt;/p&gt;

&lt;p&gt;Edit: It can now.&lt;/p&gt;</comment>
                            <comment id="273791" author="marcono1234" created="Mon, 21 Dec 2015 12:43:21 +0100"  >&lt;p&gt;What I meant was that having a screenshot of the fixed situation might make people think that it is fixed already. But it is probably not such a big deal&lt;/p&gt;</comment>
                            <comment id="270977" author="bugi74" created="Mon, 7 Dec 2015 18:45:40 +0100"  >&lt;p&gt;Marcono1234, please explain... Irritating? It has been there for years now, and I fail to find anything irritating in it, except the obnoxious falling snow disturbing the view... (Btw, I can not make a new screenshot of the fixed state; all my old various fixed MC versions I made back then are long gone now.)&lt;/p&gt;</comment>
                            <comment id="270950" author="marcono1234" created="Mon, 7 Dec 2015 16:39:13 +0100"  >&lt;p&gt;The screenshot from the &lt;a href=&quot;https://bugs.mojang.com/browse/MC-2813?focusedCommentId=49431&amp;amp;page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-49431&quot; class=&quot;external-link&quot; rel=&quot;nofollow&quot;&gt;fix&lt;/a&gt; provided by &lt;a href=&quot;https://bugs.mojang.com/secure/ViewProfile.jspa?name=bugi74&quot; class=&quot;user-hover&quot; rel=&quot;bugi74&quot;&gt;bugi74&lt;/a&gt; might be a little bit irritating&lt;/p&gt;</comment>
                            <comment id="259798" author="grum" created="Fri, 30 Oct 2015 15:54:12 +0100"  >&lt;p&gt;Barriers is Working as Intended. Removed from the ticket title.&lt;/p&gt;</comment>
                            <comment id="257176" author="mryayayify" created="Thu, 22 Oct 2015 05:05:07 +0200"  >&lt;p&gt;Confirmed for 15w43a&lt;/p&gt;</comment>
                            <comment id="228932" author="branza" created="Fri, 29 May 2015 13:33:43 +0200"  >&lt;p&gt;The packed ice might be intended to be consistent with normal ice.&lt;/p&gt;</comment>
                            <comment id="228928" author="marcono1234" created="Fri, 29 May 2015 13:11:51 +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;1.8.6&lt;/b&gt;&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Also for&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;Slimeblock&lt;/li&gt;
	&lt;li&gt;Packed Ice&lt;/li&gt;
&lt;/ul&gt;
</comment>
                            <comment id="218767" author="kingsupernova" created="Thu, 12 Feb 2015 09:22:40 +0100"  >&lt;p&gt;Also occurs with hoppers.&lt;/p&gt;</comment>
                            <comment id="173338" author="hitohora" created="Fri, 11 Jul 2014 11:16:41 +0200"  >&lt;p&gt;Confirmed for MC 14w28b.&lt;/p&gt;</comment>
                            <comment id="168999" author="torabi" created="Sat, 28 Jun 2014 22:48:38 +0200"  >&lt;p&gt;That is correct. A slab takes up a full block, even though it visually only occupies have the block. They&apos;ve added special blocks to allow you to stack two identical slabs in the same block, but it&apos;s not possible to mix them because of how blocks are stored. It would be too many possible combinations for the 4-bit metadata each block is allowed.&lt;/p&gt;

&lt;p&gt;However, an &quot;upside-down&quot; slab occupies the top half of a block space, so it should be possible for snow to form or be placed on top of it, without it floating.&lt;/p&gt;</comment>
                            <comment id="168995" author="gamegirlxl" created="Sat, 28 Jun 2014 22:36:03 +0200"  >&lt;p&gt;I also noticed that if you have one type of slab and try to place another (of a different type) on top, it behave differently than if you were placing the same type.  It behaves as if the slab is a full block.&lt;/p&gt;

&lt;p&gt;It would look strange if snow was hovering a half block above the ground, so it was probably disabled.&lt;/p&gt;

&lt;p&gt;I think that the game can&apos;t store 2 separate partial blocks in one block of space&lt;/p&gt;</comment>
                            <comment id="167169" author="garyclosse" created="Mon, 23 Jun 2014 20:12:53 +0200"  >&lt;p&gt;Confirmed for 14w25b.&lt;/p&gt;</comment>
                            <comment id="152484" author="garyclosse" created="Fri, 25 Apr 2014 16:02:01 +0200"  >&lt;p&gt;Confirmed for 14w17a&lt;/p&gt;</comment>
                            <comment id="147453" author="garyclosse" created="Sat, 15 Mar 2014 22:28:03 +0100"  >&lt;p&gt;Confirmed for 14w11b&lt;/p&gt;</comment>
                            <comment id="145895" author="garyclosse" created="Sun, 9 Mar 2014 13:41:24 +0100"  >&lt;p&gt;Confirmed for 10c&lt;/p&gt;</comment>
                            <comment id="142667" author="garyclosse" created="Sun, 23 Feb 2014 17:25:51 +0100"  >&lt;p&gt;Confirmed for 08a&lt;/p&gt;</comment>
                            <comment id="66365" author="kumasasa" created="Sun, 12 May 2013 16:45:32 +0200"  >&lt;p&gt;Please do not mark unreleased versions as affected. You do not have access to this yet.&lt;/p&gt;</comment>
                            <comment id="65015" author="bugi74" created="Sat, 4 May 2013 11:43:51 +0200"  >&lt;p&gt;A) This is issue is not about regularly places stairs (or slabs) (they are in the screenshots just for completeness/comparison).&lt;br/&gt;
B) To support regularly placed stairs or slabs, full support for sub-blocks is not needed - there are easier solutions, already used for e.g. raindrop splashes (although bit crudely) and aiming/shooting through the empty parts of stair blocks etc.&lt;br/&gt;
C) Even if sub-blocks would be used for B, it would not cause crashing and lag - crashing and lag is caused by bugs and poor design/implementation, respectively.&lt;/p&gt;</comment>
                            <comment id="64876" author="budgillett" created="Fri, 3 May 2013 15:59:24 +0200"  >&lt;p&gt;In orger for this to generate, especially for regularly placed stairs, they would need to add &quot;sub-blocks&quot; in order to create the look of snow laying on the stair or on the regularly placed slab. This could cause crashing and lag.&lt;/p&gt;</comment>
                            <comment id="49431" author="bugi74" created="Sun, 3 Mar 2013 20:32:36 +0100"  >&lt;p&gt;&lt;b&gt;Fix&lt;/b&gt;&lt;br/&gt;
Pretty much a rewrite (at least when compared to MCP version).&lt;/p&gt;
&lt;div class=&quot;code panel&quot; style=&quot;border-width: 1px;&quot;&gt;&lt;div class=&quot;codeHeader panelHeader&quot; style=&quot;border-bottom-width: 1px;&quot;&gt;&lt;b&gt;BlockSnow&lt;/b&gt;&lt;/div&gt;&lt;div class=&quot;codeContent panelContent&quot;&gt;
&lt;pre class=&quot;code-java&quot;&gt;    &lt;span class=&quot;code-keyword&quot;&gt;public&lt;/span&gt; &lt;span class=&quot;code-object&quot;&gt;boolean&lt;/span&gt; canPlaceBlockAt(World world, &lt;span class=&quot;code-object&quot;&gt;int&lt;/span&gt; x, &lt;span class=&quot;code-object&quot;&gt;int&lt;/span&gt; y, &lt;span class=&quot;code-object&quot;&gt;int&lt;/span&gt; z) {
        &lt;span class=&quot;code-object&quot;&gt;int&lt;/span&gt; blockId = world.getBlockId(x, y - 1, z);
        &lt;span class=&quot;code-keyword&quot;&gt;if&lt;/span&gt; (blockId == 0)
            &lt;span class=&quot;code-keyword&quot;&gt;return&lt;/span&gt; &lt;span class=&quot;code-keyword&quot;&gt;false&lt;/span&gt;;
        &lt;span class=&quot;code-keyword&quot;&gt;if&lt;/span&gt; (blockId == Block.glass.blockID || blockId == Block.leaves.blockID)
            &lt;span class=&quot;code-keyword&quot;&gt;return&lt;/span&gt; &lt;span class=&quot;code-keyword&quot;&gt;true&lt;/span&gt;;
        &lt;span class=&quot;code-keyword&quot;&gt;if&lt;/span&gt; (Block.blocksList[blockId].isOpaqueCube()) {
            &lt;span class=&quot;code-keyword&quot;&gt;if&lt;/span&gt; (world.getBlockMaterial(x, y - 1, z).blocksMovement())
                &lt;span class=&quot;code-keyword&quot;&gt;return&lt;/span&gt; &lt;span class=&quot;code-keyword&quot;&gt;true&lt;/span&gt;;
        }
        &lt;span class=&quot;code-comment&quot;&gt;// Check the top surface more accurately, the fix &lt;span class=&quot;code-keyword&quot;&gt;for&lt;/span&gt; halfslabs:
&lt;/span&gt;        &lt;span class=&quot;code-keyword&quot;&gt;if&lt;/span&gt; (world.doesBlockHaveSolidTopSurface(x, y-1, z))
            &lt;span class=&quot;code-keyword&quot;&gt;return&lt;/span&gt; &lt;span class=&quot;code-keyword&quot;&gt;true&lt;/span&gt;;
        
        &lt;span class=&quot;code-keyword&quot;&gt;return&lt;/span&gt; &lt;span class=&quot;code-keyword&quot;&gt;false&lt;/span&gt;;
    }
&lt;/pre&gt;
&lt;/div&gt;&lt;/div&gt;
&lt;p&gt;And then remove some unnecessary checks in World:&lt;/p&gt;
&lt;div class=&quot;code panel&quot; style=&quot;border-width: 1px;&quot;&gt;&lt;div class=&quot;codeHeader panelHeader&quot; style=&quot;border-bottom-width: 1px;&quot;&gt;&lt;b&gt;World.canSnowAt()&lt;/b&gt;&lt;/div&gt;&lt;div class=&quot;codeContent panelContent&quot;&gt;
&lt;pre class=&quot;code-java&quot;&gt;            ...
                &lt;span class=&quot;code-object&quot;&gt;int&lt;/span&gt; blockIdUnder = &lt;span class=&quot;code-keyword&quot;&gt;this&lt;/span&gt;.getBlockId(x, y - 1, z);
                &lt;span class=&quot;code-object&quot;&gt;int&lt;/span&gt; blockIdOver = &lt;span class=&quot;code-keyword&quot;&gt;this&lt;/span&gt;.getBlockId(x, y, z);
                &lt;span class=&quot;code-keyword&quot;&gt;if&lt;/span&gt; (blockIdUnder != 0 &amp;amp;&amp;amp; blockIdOver == 0
                        &amp;amp;&amp;amp; Block.snow.canPlaceBlockAt(&lt;span class=&quot;code-keyword&quot;&gt;this&lt;/span&gt;, x, y, z)
                        &lt;span class=&quot;code-comment&quot;&gt;/*&amp;amp;&amp;amp; blockIdUnder != Block.ice.blockID &amp;amp;&amp;amp; Block.blocksList[blockIdUnder].blockMaterial.blocksMovement()*/&lt;/span&gt;) {
                    &lt;span class=&quot;code-keyword&quot;&gt;return&lt;/span&gt; &lt;span class=&quot;code-keyword&quot;&gt;true&lt;/span&gt;;
                }
            ...
&lt;/pre&gt;
&lt;/div&gt;&lt;/div&gt;

&lt;p&gt;Note, added the glass block separately. Does not make sense to allow snow on top of leaves (pretty non-solid stuff), but disallow it on top of smooth solid chunk of glass, especially when torches have similar special check. Easy to remove if really not intended. Also, moved the leaves check to that simpler &apos;if&apos;, as it does not need to check for blocksMovement, at least for now.&lt;/p&gt;

&lt;p&gt;I would have added ice, too, but noticed the specific disallowing in the current World.canSnotAt() method. Though I wonder why so, and wonder why the check was there and not in the method in BlockSnow.)&lt;/p&gt;

&lt;p&gt;Changes tested on 1.4.7. Adding screenshot &apos;fixed_snow.png&apos; to show results. Snow near the torches (except on furnace blocks) is hand placed, while the snow nearer has rained on the blocks.&lt;/p&gt;</comment>
                            <comment id="43839" author="downunderit" created="Tue, 5 Feb 2013 22:48:44 +0100"  >&lt;p&gt;Seeing as redstone and rails can be placed on top slabs and upside down stairs this is more a bug than an unimplemented feature.&lt;/p&gt;</comment>
                            <comment id="42804" author="kimitsu" created="Sat, 2 Feb 2013 16:21:11 +0100"  >&lt;p&gt;Nor can you place the new snow blocks on these, as of 13w05b&lt;/p&gt;</comment>
                            <comment id="20828" author="kumasasa" created="Mon, 12 Nov 2012 00:01:42 +0100"  >&lt;p&gt;Confirmed.&lt;br/&gt;
On all double slabs snow does form.&lt;/p&gt;</comment>
                            <comment id="20758" author="banana478" created="Sun, 11 Nov 2012 20:45:34 +0100"  >&lt;p&gt;This is most likely because half-slabs are transparent. You will notice that snow also does not show up on glass, etc. Does this bug apply to double half-slabs?&lt;/p&gt;</comment>
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