247742 2022-11-10 09:42:40 -0800 Fix broken preferred widths optimization involving subtree layout roots 2022-11-13 16:59:18 -0800 1 1 1 Unclassified WebKit Layout and Rendering Safari Technology Preview Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 ahmad.saleem792 webkit-unassigned ap bfulgham simon.fraser webkit-bug-importer zalan oldest_to_newest 1911565 0 ahmad.saleem792 2022-11-10 09:42:40 -0800 Hi Team, While going through Blink commits, I came across following commit: Link - https://chromium.googlesource.com/chromium/blink/+/ed902d339fbff3a62e2f6124d8d40bbad45e97c0 Which removed a hacky optimization added in 2006. We still have this optimization here: https://github.com/WebKit/WebKit/blob/fa2a14f12031baf24d5bc6d6727c3e25c5052589/Source/WebCore/rendering/RenderBox.cpp#LL2610 The testcase attached render same as Chrome Canary 109 as in Safari Technology Preview 157 and Safari 16.1: Test Case - https://jsfiddle.net/m4hja1pv/show But I think it would be better tested in EWS. I will tag @Alexey (ap), who landed this in 2006. Just to get his input. Thanks! 1912134 1 ews-feeder 2022-11-13 16:58:00 -0800 Committed 256623@main (06fa3e82eb2e): <https://commits.webkit.org/256623@main> Reviewed commits have been landed. Closing PR #6433 and removing active labels. 1912135 2 webkit-bug-importer 2022-11-13 16:59:18 -0800 <rdar://problem/102298308>