It seems like in certain scenarios the grid in the masonry direction is getting sized slightly incorrectly. This is causing the following tests to fail even though the items are positioned correctly according to the masonry algorithm: masonry-item-placement-002.html masonry-item-placement-004.html
<rdar://problem/108801925>
Pull request: https://github.com/WebKit/WebKit/pull/13381
Committed 263657@main (95758ddf1955): <https://commits.webkit.org/263657@main> Reviewed commits have been landed. Closing PR #13381 and removing active labels.