211049 2020-04-26 11:36:57 -0700 trackpad inertial scrolling a nested, scroll-snap container also scrolls the ancestor scroll container 2020-04-29 07:46:13 -0700 1 1 1 Unclassified WebKit Scrolling Safari Technology Preview Unspecified Unspecified RESOLVED DUPLICATE 210095 InRadar P2 Normal --- 1 alex webkit-unassigned simon.fraser webkit-bug-importer oldest_to_newest 1645802 0 alex 2020-04-26 11:36:57 -0700 How to reproduce: 1. Open https://jsbin.com/kixoqexixo/edit?html,output 2. Scroll the area with the green rulers using your trackpad and with some velocity What happens: As soon as you stop scrolling and momentum scrolling kicks in the red rulers also start to scroll. What is expected: As long as the scroll was initialized by the inner nested scroll-snap container the ancestor should not be scrolled. 1646367 1 webkit-bug-importer 2020-04-27 19:59:35 -0700 <rdar://problem/62480952> 1646498 2 simon.fraser 2020-04-28 09:00:57 -0700 I think I fixed this in r259805. Can you test STP 105? 1646850 3 alex 2020-04-28 22:48:11 -0700 Yes it is fixed in STP 105. I tested it in STP 104... Sorry for the noise and thank you very much. 1646986 4 simon.fraser 2020-04-29 07:46:13 -0700 *** This bug has been marked as a duplicate of bug 210095 ***