290573 2025-03-27 15:38:23 -0700 [Grid] Allow extrinsically sized grid to perform simplified layout when grid items are mutated 2025-03-31 19:54:04 -0700 1 1 1 Unclassified WebKit Layout and Rendering WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED https://github.com/web-platform-tests/wpt/pull/51728 InRadar P2 Normal --- 1 sgill26 sgill26 bfulgham simon.fraser webkit-bug-importer zalan oldest_to_newest 2106608 0 sgill26 2025-03-27 15:38:23 -0700 If a grid is extrinsically sized then, in theory, any mutations within a grid item should be contained within the formatting context inside the grid item and should not bubble up into the grid and any ancestor renderers/formatting contexts. In this case we could potentially mark the grid and any ancestors as only needed simplified layout 2106609 1 webkit-bug-importer 2025-03-27 15:38:44 -0700 <rdar://problem/148055966> 2106639 2 sgill26 2025-03-27 16:27:35 -0700 Pull request: https://github.com/WebKit/WebKit/pull/43012 2107434 3 sgill26 2025-03-31 09:45:32 -0700 Submitted web-platform-tests pull request: https://github.com/web-platform-tests/wpt/pull/51728 2107695 4 ews-feeder 2025-03-31 19:54:02 -0700 Committed 292994@main (83bba6965f88): <https://commits.webkit.org/292994@main> Reviewed commits have been landed. Closing PR #43012 and removing active labels.