Bug 232481

Summary:	https://twitter.com/webkit/ takes 100% CPU for a while
Product:	WebKit	Reporter:	Anthony Ricaud <rik>
Component:	New Bugs	Assignee:	Sergio Villar Senin <svillar>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	koivisto, rego, svillar, webkit-bug-importer, ysuzuki, zalan
Priority:	P2	Keywords:	InRadar
Version:	Safari Technology Preview
Hardware:	Unspecified
OS:	Unspecified
Bug Depends on:
Bug Blocks:	225590, 221479, 230755

Description Anthony Ricaud 2021-10-29 05:10:30 PDT

See https://twitter.com/lapcatsoftware/status/1453469143479504913. 

Jeff Johnson reports this issue on macOS 11.6.1.

I'm also seeing this issue on macOS 12.0.1.

Comment 1 Radar WebKit Bug Importer 2021-10-29 12:27:43 PDT

<rdar://problem/84819606>

Comment 2 Yusuke Suzuki 2021-10-29 12:36:11 PDT

This looks like flexbox layout issue. https://twitter.com/lapcatsoftware/status/1453470082517147648

Comment 3 Yusuke Suzuki 2021-10-29 13:07:27 PDT

Caused by r284359.

Comment 4 Yusuke Suzuki 2021-10-29 13:20:57 PDT

Reverted three changes in https://trac.webkit.org/changeset/285045/webkit