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<base href="https://bugs.webkit.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - :hover CSS pseudo-class sometimes keeps matching ever after mouse has left the element"
href="https://bugs.webkit.org/show_bug.cgi?id=158340">158340</a>
</td>
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<th>Summary</th>
<td>:hover CSS pseudo-class sometimes keeps matching ever after mouse has left the element
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr>
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<th>Product</th>
<td>WebKit
</td>
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<th>Version</th>
<td>WebKit Nightly Build
</td>
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<th>Hardware</th>
<td>Macintosh
</td>
</tr>
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<th>OS</th>
<td>OS X 10.11
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>Normal
</td>
</tr>
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<th>Priority</th>
<td>P2
</td>
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<th>Component</th>
<td>CSS
</td>
</tr>
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>webkit@chrisrebert.com
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=280426" name="attach_280426" title="Video of the bug in action">attachment 280426</a> <a href="attachment.cgi?id=280426&action=edit" title="Video of the bug in action">[details]</a></span>
Video of the bug in action
Steps to reproduce:
1. Open <a href="https://jsfiddle.net/cvrebert/rgq9zwc2/">https://jsfiddle.net/cvrebert/rgq9zwc2/</a> in WebKit Nightly or Safari 9.
2. Move the mouse pointer to the star in the lower-right corner.
3. Observe that a tooltip appears.
4. Move the mouse pointer vertically upward along the column of stars.
Actual result:
Several of the gray boxes turn blue and stay blue,
indicating that the :hover pseudo-class is applying to several of them simultaneously.
See attached video, courtesy of <a href="https://github.com/RopoMen">https://github.com/RopoMen</a>
Expected result:
Only the box currently being hovered over should be blue.
Each box should turn gray again immediately after the pointer moves outside of the box's respective bounds.
Original Bootstrap bug:
<a href="https://github.com/twbs/bootstrap/issues/20012">https://github.com/twbs/bootstrap/issues/20012</a></pre>
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