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    <body><span class="vcard"><a class="email" href="mailto:simon.fraser&#64;apple.com" title="Simon Fraser (smfr) &lt;simon.fraser&#64;apple.com&gt;"> <span class="fn">Simon Fraser (smfr)</span></a>
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              <a class="bz_bug_link 
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   title="NEW - REGRESSION (r198943): Transitions don't work if they animate display property"
   href="https://bugs.webkit.org/show_bug.cgi?id=157244">bug 157244</a>
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           <td style="text-align:right;">Attachment #277965 Flags</td>
           <td>review?
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           <td>review+
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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - REGRESSION (r198943): Transitions don't work if they animate display property"
   href="https://bugs.webkit.org/show_bug.cgi?id=157244#c7">Comment # 7</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - REGRESSION (r198943): Transitions don't work if they animate display property"
   href="https://bugs.webkit.org/show_bug.cgi?id=157244">bug 157244</a>
              from <span class="vcard"><a class="email" href="mailto:simon.fraser&#64;apple.com" title="Simon Fraser (smfr) &lt;simon.fraser&#64;apple.com&gt;"> <span class="fn">Simon Fraser (smfr)</span></a>
</span></b>
        <pre>Comment on <span class=""><a href="attachment.cgi?id=277965&amp;action=diff" name="attach_277965" title="patch">attachment 277965</a> <a href="attachment.cgi?id=277965&amp;action=edit" title="patch">[details]</a></span>
patch

View in context: <a href="https://bugs.webkit.org/attachment.cgi?id=277965&amp;action=review">https://bugs.webkit.org/attachment.cgi?id=277965&amp;action=review</a>

<span class="quote">&gt; Source/WebCore/style/StyleTreeResolver.cpp:233
&gt; +        // FIXME: Animations should be connected to elements, not renderers.</span >

I think you should remove this FIXME. The consensus in the CSS WG is that animations run on renders, so you'll never be able to animate from display:none.

<span class="quote">&gt; LayoutTests/ChangeLog:10
&gt; +        * fast/css/transition-display-property-expected.html: Added.
&gt; +        * fast/css/transition-display-property.html: Added.</span >

Maybe the test should go in transitions/ ?</pre>
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