This regressed in STP 148: https://wpt.fyi/results/css/css-sizing/aspect-ratio/floats-aspect-ratio-001.html?run_id=5702899928662016&run_id=5728111286026240 Bisecting found: Works: r294743 Fails: r294747 Gonna assume r294744 because it's the only actual layout change there!
<rdar://problem/96211616>
floats-aspect-ratio-001.html has "accidentally" progressed at r292532 and later when r292532 was reverted at r294754 we went back to the pre-r292532 state.