287007 2025-02-04 02:28:14 -0800 block-axis inline box borders break caret placement in vertical-rl text 2025-04-17 06:43:51 -0700 1 1 1 Unclassified WebKit Layout and Rendering WebKit Local Build Unspecified Unspecified NEW InRadar P2 Normal --- 48541 1 fantasai.bugs fantasai.bugs bfulgham simon.fraser webkit-bug-importer zalan oldest_to_newest 2091774 0 fantasai.bugs 2025-02-04 02:28:14 -0800 Overview: Something about block-axis borders on inline boxes breaks caret placement in vertical-rl text. Steps to Reproduce: 1. Open testcase. 2. Click in the padding before/after the start/end of the line. 3. Notice super wacky behavior where the cursor ends up on the wrong line or the wrong isde of the box. Other notes: The bug is triggered by block-axis borders (and not inline-axis borders), and only occurs in vertical-rl/sideways-rl modes (-lr modes are fine). 2091775 1 webkit-bug-importer 2025-02-04 02:28:26 -0800 <rdar://problem/144149255> 2091777 2 474134 fantasai.bugs 2025-02-04 02:30:15 -0800 Created attachment 474134 testcase 2091778 3 fantasai.bugs 2025-02-04 02:35:32 -0800 Current suspicion is on contentStartInBlockDirection(), due to use of isBlockFlipped(), but it needs more investigation. https://searchfox.org/wubkat/source/Source/WebCore/layout/integration/inline/InlineIteratorLineBoxInlines.h#39 2101094 4 fantasai.bugs 2025-03-06 12:10:02 -0800 Pull request: https://github.com/WebKit/WebKit/pull/42026 474134 2025-02-04 02:30:15 -0800 2025-02-04 02:30:15 -0800 testcase test-vertical-rl.html text/html 379 fantasai.bugs PCFET0NUWVBFIGh0bWw+CjxwIHN0eWxlPSJoZWlnaHQ6IDdlbTsgIHBhZGRpbmc6IDFlbTsgYm9y ZGVyOiBzb2xpZCBncmF5OyB3cml0aW5nLW1vZGU6IHZlcnRpY2FsLXJsIiBjb250ZW50ZWRpdGFi bGU+VGhpcyA8c3BhbiBzdHlsZT0iYm9yZGVyOiBzb2xpZCI+aXMgc29tZSB2ZXJ0aWNhbCB0ZXh0 PC9zcGFuPiB0aGF0IHlvdSBjYW4gc2VsZWN0IGFuZCBlZGl0Cgo8cCBzdHlsZT0iaGVpZ2h0OiA3 ZW07ICBwYWRkaW5nOiAxZW07IGJvcmRlcjogc29saWQgZ3JheTsgd3JpdGluZy1tb2RlOiB2ZXJ0 aWNhbC1ybCIgY29udGVudGVkaXRhYmxlPlRoaXMgPHNwYW4+aXMgc29tZSB2ZXJ0aWNhbCB0ZXh0 PC9zcGFuPiB0aGF0IHlvdSBjYW4gc2VsZWN0IGFuZCBlZGl0Cg==