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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - REGRESSION(r188659): Non main frame scrollable areas don't work for pages restored from the page cache"
href="https://bugs.webkit.org/show_bug.cgi?id=153404">153404</a>
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<th>Summary</th>
<td>REGRESSION(r188659): Non main frame scrollable areas don't work for pages restored from the page cache
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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 Local Build
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<th>Hardware</th>
<td>Unspecified
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<th>OS</th>
<td>Unspecified
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<th>Status</th>
<td>NEW
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<th>Keywords</th>
<td>Regression
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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>Layout and Rendering
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
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<th>Reporter</th>
<td>cgarcia@igalia.com
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<th>CC</th>
<td>bfulgham@webkit.org, cdumez@apple.com, dino@apple.com, simon.fraser@apple.com
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<pre>Since r188659 FrameView scrollable areas are cleared when a page is cached in the history cache, but they are not restored on resume. The problem can be reproduced with safari:
- Visit a page containing non frame scrollable areas, like a menu list, for example: <a href="http://www.robinlionheart.com/stds/html4/forms">http://www.robinlionheart.com/stds/html4/forms</a> this page has a lot of scrollable areas
- Note that you can scroll the examples and menu lists with the scroll wheel
- Go back and then go forward
- Try to scroll any of the areas using the scroll wheel, without using the scrollbars. The main frame is scrolled instead.
If you enable overlay scrollbars and repeat the steps you will notice that scrollbars never appear again for those areas, so it's impossible to scroll them. When the page is suspended, scrollbars are locked (see Page::lockAllOverlayScrollbarsToHidden), but they are not unclocked on resume, because the frame view has an empty ScrollabeAreas set.</pre>
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