301992 2025-11-04 23:32:29 -0800 Update the first letter when the first line is changed by adding a new text at its start 2026-05-06 14:09:54 -0700 1 1 1 Unclassified WebKit Layout and Rendering Safari Technology Preview Unspecified Unspecified RESOLVED DUPLICATE 15602 InRadar P2 Normal --- 1 ahmad.saleem792 webkit-unassigned bfulgham koivisto simon.fraser webkit-bug-importer zalan oldest_to_newest 2156518 0 ahmad.saleem792 2025-11-04 23:32:29 -0800 Hi Team, While going through Blink's commit, I came across another failing test: Test Case - https://jsfiddle.net/gk3wLomf/ ^ Fails in Safari 26.1 and passes in Chrome Canary 144. Blink Commit - https://chromium.googlesource.com/chromium/blink/+/43f2b197f78550562b865c3abea7dc9844f147ba Just raising so we can track and fix it. Thanks! 2156583 1 477305 zalan 2025-11-05 07:08:45 -0800 Created attachment 477305 Test reduction Looks like a tree-updater/builder issue (we don't seem to replace the first-letter subtree with the freshly constructed content) B---YL---L --* RenderView at (0,0) size 1366x804 renderer (0x115128150) layout box (0x0) B----L---L -- HTML RenderBlock at (0,0) size 1366x804 renderer (0x1151a40c0) layout box (0x0) node (0x115198100) B--------- -- BODY RenderBody at (8,8) size 1350x788 renderer (0x1151a4230) layout box (0x0) node (0x1150f43d0) B--------- -- DIV RenderBlock at (0,18) size 1350x18 renderer (0x1151a43a0) layout box (0x11512c410) node (0x1150f4460) id='test' I---Y----- -- RenderInline (::first-letter) renderer (0x1150f8580) layout box (0x11512c4e0) I---Y----- -- RenderText (::first-letter) renderer (0x115060540) layout box (0x1150583c0) length->(1) "O" I--------- -- #text RenderText renderer (0x1151d4480) layout box (0x115058480) node (0x1150ccb80) length->(1) "A" I--------- -- #text RenderText renderer (0x115060460) layout box (0x115058540) node (0x1150cca80) length->(1) "K" 2156585 2 webkit-bug-importer 2025-11-05 07:33:42 -0800 <rdar://problem/164089808> 2208265 3 zalan 2026-05-06 14:09:54 -0700 *** This bug has been marked as a duplicate of bug 15602 *** 477305 2025-11-05 07:08:45 -0800 2025-11-05 07:08:45 -0800 Test reduction 301992.html text/html 216 zalan PHN0eWxlPgpkaXY6Zmlyc3QtbGV0dGVyIHsKICBjb2xvcjogdHJhbnNwYXJlbnQ7Cn0KPC9zdHls ZT4KUEFTUyBpZiByZWFkcyAnT0snLgo8ZGl2IGlkPSJ0ZXN0Ij5PSzwvZGl2PjxzY3JpcHQ+CmRv Y3VtZW50LmJvZHkub2Zmc2V0SGVpZ2h0Owp0ZXN0Lmluc2VydEJlZm9yZShkb2N1bWVudC5jcmVh dGVUZXh0Tm9kZSgnQScpLCB0ZXN0LmZpcnN0Q2hpbGQpOwo8L3NjcmlwdD4K