268539 2024-02-01 03:35:15 -0800 CSS subgrid fails on scroll containers 2024-02-08 04:30:38 -0800 1 1 1 Unclassified WebKit CSS Safari Technology Preview Unspecified Unspecified RESOLVED DUPLICATE 267085 InRadar P2 Normal --- 1 jaffathecake webkit-unassigned bfulgham mattwoodrow mendelgordons sgill26 simon.fraser webkit-bug-importer zalan oldest_to_newest 2009678 0 jaffathecake 2024-02-01 03:35:15 -0800 https://codepen.io/jaffathecake/pen/RwdMgGV The subgrid applies in Chrome and Firefox, but doesn't seem to apply in Safari (you get a single column). 2009833 1 webkit-bug-importer 2024-02-01 12:20:48 -0800 <rdar://problem/122122998> 2009856 2 jaffathecake 2024-02-01 13:31:01 -0800 To be clear, I haven't managed to confirm which behaviour is expected. I personally expected the Chrome/Firefox behaviour, but I haven't managed to figure the spec out. 2009861 3 sgill26 2024-02-01 13:37:46 -0800 Hi Jake, I believe this issue may have been resolved by https://commits.webkit.org/273134@main Does this bug reproduce in the iOS 17.4 beta? 2009862 4 sgill26 2024-02-01 13:40:42 -0800 (or the macOS 14.4 beta) 2009881 5 jaffathecake 2024-02-01 14:22:39 -0800 I don't have access to betas, but the commit message sounds like it might fix the issue. Cam you test with the demo provided? 2009974 6 mendelgordons 2024-02-01 17:59:56 -0800 I just tested this in the latest webkit-main and the issue seems to be resolved! In the current version of safari it's not, so it seems like the changes made to webkit here fixed it, and once that version of webkit is used in safari it should be fixed there as well. Here is a screenshot of what I see - minibrowser on the left and safari on the right: https://shottr.cc/s/Vw9i/SCR-20240201-u2p.png 2010041 7 jaffathecake 2024-02-02 00:30:22 -0800 Looks like it's already fixed! Any idea when it might land in Safari? It's not in TP. 2011558 8 sgill26 2024-02-07 15:14:15 -0800 According to today's STP release notes this change should be picked up: https://webkit.org/blog/15026/release-notes-for-safari-technology-preview-188/ Please let us know if you can still reproduce the bug even in the latest STP! *** This bug has been marked as a duplicate of bug 267085 *** 2011708 9 jaffathecake 2024-02-08 04:30:38 -0800 Confirmed! The demo now works perfectly. Thank you!