Bug 151926 - Block formatting context (overflow:hidden) doesn't clear float if two clear:both divs at end of container in between
Summary: Block formatting context (overflow:hidden) doesn't clear float if two clear:b...
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: Layout and Rendering (show other bugs)
Version: WebKit Nightly Build
Hardware: All All
: P2 Normal
Assignee: Nobody
URL: https://bugzilla.mozilla.org/attachme...
Keywords: HasReduction, InRadar
Depends on:
Blocks:
 
Reported: 2015-12-06 15:45 PST by Chris Rebert
Modified: 2016-09-17 23:24 PDT (History)
2 users (show)

See Also:

Attachments
Screenshot of incorrect rendering in WebKit Nightly (12.32 KB, image/png)
2015-12-06 15:45 PST, Chris Rebert 		no flags Details
Screenshot of correct rendering in Chrome Canary (31.06 KB, image/png)
2015-12-06 15:46 PST, Chris Rebert 		no flags Details
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Description Chris Rebert 2015-12-06 15:45:18 PST 
Created attachment 266740 [details]
Screenshot of incorrect rendering in WebKit Nightly

Steps to reproduce:
1. Open https://bugzilla.mozilla.org/attachment.cgi?id=8665202 in WebKit Nightly

Expected results:
The yellow box should be entirely below (with respect to the Y axis) the blue floating box.
See Chrome Canary screenshot.
IE11 and Firefox Nightly also behave like Chrome Canary.

Actual results:
The blue floating box is entirely within the yellow box.
See WebKit Nightly screenshot.

Analogous Chrome bug: https://code.google.com/p/chromium/issues/detail?id=535381

Originally discovered in: https://bugzilla.mozilla.org/show_bug.cgi?id=1196255
Comment 1 Chris Rebert 2015-12-06 15:46:37 PST 
Created attachment 266742 [details]
Screenshot of correct rendering in Chrome Canary
Comment 2 Radar WebKit Bug Importer 2016-01-16 02:57:04 PST 
<rdar://problem/24219751>
Comment 3 Chris Rebert 2016-03-22 16:09:45 PDT 
Still broken in Safari Version 9.1 (11601.5.17.1).
Comment 4 Chris Rebert 2016-09-17 23:24:23 PDT 
Still broken in Tech Preview Release 13 (WebKit 11603.1.5).

Worth noting that this was fixed in Chrome and the patch looks trivial:
https://codereview.chromium.org/1393533002