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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Tapping from one <input> to another in an overlay can cause shaking/jiggling effect"
href="https://bugs.webkit.org/show_bug.cgi?id=158276">158276</a>
</td>
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<th>Summary</th>
<td>Tapping from one <input> to another in an overlay can cause shaking/jiggling effect
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>Product</th>
<td>WebKit
</td>
</tr>
<tr>
<th>Version</th>
<td>Safari 9
</td>
</tr>
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<th>Hardware</th>
<td>iOS
</td>
</tr>
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<th>OS</th>
<td>iOS 9.3
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
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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>Layout and Rendering
</td>
</tr>
<tr>
<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>webkit@chrisrebert.com
</td>
</tr>
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<th>CC</th>
<td>simon.fraser@apple.com
</td>
</tr></table>
<p>
<div>
<pre>Steps to reproduce:
1. Open <a href="http://output.jsbin.com/xedane/quiet">http://output.jsbin.com/xedane/quiet</a> in Safari on iOS 9.3.2.
2. Tap the "Launch modal" button.
3. Scroll down to "field 7".
4. Tap into the <input> below "field 7".
5. Tap into the <input> above it.
Actual result:
While focusing the <input>, the modal moves up and down multiple times, causing an unsightly jiggling/shaking/jerky effect
Expected result:
When focusing the <input>, the modal should move smoothly, preferably in a single motion.
Original Bootstrap bug report:
<a href="https://github.com/twbs/bootstrap/issues/19927">https://github.com/twbs/bootstrap/issues/19927</a></pre>
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