232481 2021-10-29 05:10:30 -0700 https://twitter.com/webkit/ takes 100% CPU for a while 2021-11-01 13:49:41 -0700 1 1 1 Unclassified WebKit New Bugs Safari Technology Preview Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 225590 221479 230755 1 rik svillar koivisto rego svillar webkit-bug-importer ysuzuki zalan oldest_to_newest 1810031 0 rik 2021-10-29 05:10:30 -0700 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. 1810185 1 webkit-bug-importer 2021-10-29 12:27:43 -0700 <rdar://problem/84819606> 1810187 2 ysuzuki 2021-10-29 12:36:11 -0700 This looks like flexbox layout issue. https://twitter.com/lapcatsoftware/status/1453470082517147648 1810199 3 ysuzuki 2021-10-29 13:07:27 -0700 Caused by r284359. 1810206 4 ysuzuki 2021-10-29 13:20:57 -0700 Reverted three changes in https://trac.webkit.org/changeset/285045/webkit