Bug 201668

Summary: REGRESSION (iOS 13): Top fixed element on apple.com flickers in size while pinching in
Product: WebKit Reporter: Simon Fraser (smfr) <simon.fraser>
Component: New BugsAssignee: Simon Fraser (smfr) <simon.fraser>
Status: RESOLVED FIXED    
Severity: Normal CC: cmarcelo, ews-watchlist, fred.wang, jamesr, koivisto, luiz, simon.fraser, tonikitoo, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
Patch
none
Patch
none
Patch fred.wang: review+

Simon Fraser (smfr)
Reported 2019-09-10 17:46:23 PDT
REREGRESSION (iOS 13): Top fixed element on apple.com flickers in size while pinching in
Attachments
Patch (3.53 KB, patch)
2019-09-10 18:15 PDT, Simon Fraser (smfr) 		no flags
DetailsFormatted DiffDiff
Patch (3.52 KB, patch)
2019-09-10 18:17 PDT, Simon Fraser (smfr) 		no flags
DetailsFormatted DiffDiff
Patch (11.05 KB, patch)
2019-09-11 17:45 PDT, Simon Fraser (smfr) 		fred.wang: review+
DetailsFormatted DiffDiff
Show Obsolete (2) View All Add attachment proposed patch, testcase, etc.
Simon Fraser (smfr)
Comment 1 2019-09-10 18:15:38 PDT
Created attachment 378523 [details] Patch
Simon Fraser (smfr)
Comment 2 2019-09-10 18:15:40 PDT
<rdar://problem/51934041>
Simon Fraser (smfr)
Comment 3 2019-09-10 18:17:00 PDT
Created attachment 378524 [details] Patch
Antti Koivisto
Comment 4 2019-09-10 22:30:31 PDT
Comment on attachment 378524 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=378524&action=review > Source/WebCore/ChangeLog:15 > + With this change ScrollingTreeFrameScrollingNode no longer needs m_behaviorForFixed; it can be removed layer. 'later'.
Simon Fraser (smfr)
Comment 5 2019-09-11 15:26:34 PDT
Comment on attachment 378524 [details] Patch Actually this makes some interactions worse.
Simon Fraser (smfr)
Comment 6 2019-09-11 17:45:31 PDT
Created attachment 378605 [details] Patch
Frédéric Wang (:fredw)
Comment 7 2019-09-11 21:38:41 PDT
Comment on attachment 378605 [details] Patch LGTM
Simon Fraser (smfr)
Comment 8 2019-09-12 13:19:13 PDT
https://trac.webkit.org/changeset/249815/webkit
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