Step 3: https://drafts.csswg.org/css-align-3/#align-by-baseline After the items in the baseline sharing group have been aligned with each other, the entire baseline sharing group needs to get aligned according to its fallback alignment. For first baseline alignment, this is "safe self-start," and for last baseline alignment this is "safe self-end."
<rdar://problem/109496710>
Pull request: https://github.com/WebKit/WebKit/pull/16361
Committed 267026@main (c4b5ac727df8): <https://commits.webkit.org/267026@main> Reviewed commits have been landed. Closing PR #16361 and removing active labels.