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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Web Inspector: difficult to zoom rendering frames timeline using trackpad"
href="https://bugs.webkit.org/show_bug.cgi?id=158586">158586</a>
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<th>Summary</th>
<td>Web Inspector: difficult to zoom rendering frames timeline using trackpad
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<th>Classification</th>
<td>Unclassified
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<th>Product</th>
<td>WebKit
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<th>Version</th>
<td>WebKit Nightly Build
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<th>Hardware</th>
<td>All
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>Normal
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<th>Priority</th>
<td>P2
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<th>Component</th>
<td>Web Inspector
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
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<th>Reporter</th>
<td>bburg@apple.com
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<th>CC</th>
<td>bburg@apple.com, joepeck@webkit.org, mattbaker@apple.com, nvasilyev@apple.com, timothy@apple.com, webkit-bug-importer@group.apple.com
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<pre>Created <span class=""><a href="attachment.cgi?id=280952" name="attach_280952" title="[MOVIE] jumpy zooming">attachment 280952</a> <a href="attachment.cgi?id=280952&action=edit" title="[MOVIE] jumpy zooming">[details]</a></span>
[MOVIE] jumpy zooming
It should be centered at where the mouse cursor is, but it drifts to the right or left if you are slightly off center. See the video.
I think we need to add or increase the hysteresis to be more up/down left/right than the record-based timelines. This is because those timelines give much faster feedback so you can adjust your trackpad movement easier. By comparison the rendering frames timeline is jumpy.</pre>
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