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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Crash when changing video subtitles."
href="https://bugs.webkit.org/show_bug.cgi?id=167159">167159</a>
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<th>Summary</th>
<td>Crash when changing video subtitles.
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
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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>Unspecified
</td>
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<th>OS</th>
<td>macOS 10.12
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>Normal
</td>
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<th>Priority</th>
<td>P2
</td>
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<th>Component</th>
<td>WebCore Misc.
</td>
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
</td>
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<th>Reporter</th>
<td>pvollan@apple.com
</td>
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<pre>When changing video captions during playback in MiniBrowser, I get an access violation crash with the stack trace:
0 WebCore::Element::getBoundingClientRect() + 32
1 WebCore::VTTRegion::willRemoveTextTrackCueBox(WebCore::VTTCueBox*) + 44
2 WebCore::VTTRegion::willRemoveTextTrackCueBox(WebCore::VTTCueBox*) + 44
3 WebCore::VTTCue::removeDisplayTree() + 72
4 WebCore::TextTrack::setMode(WTF::AtomicString const&) + 320
5 WebCore::HTMLMediaElement::setSelectedTextTrack(WebCore::TextTrack*) + 308</pre>
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