233417 2021-11-22 02:40:01 -0800 touch-action doesn't prevent the Safari UI from collapsing 2022-10-21 01:38:03 -0700 1 1 1 Unclassified WebKit UI Events Safari 15 iPhone / iPad iOS 15 RESOLVED MOVED InRadar P2 Normal --- 1 mattgperry webkit-unassigned augus.dupin bfulgham h.dodov ik mattgperry simon.fraser tsmd57 webkit-bug-importer oldest_to_newest 1817258 0 mattgperry 2021-11-22 02:40:01 -0800 https://q0j97.csb.app/ Steps to reproduce: Scroll the page by initiating touch gesture from the green background. Page scrolls, this is expected. Scroll until the address bar disappears. White box has "touch-action: pan-x" applied. Initiate touch gesture from the white box. Page does not scroll, this is expected. Attempt to scroll down from white box. Page does not scroll but address bar *does* expand. This is not expected. This breaks non-native drag gesture implementations. 1817272 1 augus.dupin 2021-11-22 05:38:08 -0800 This also happens with (native) horizontal scroll containers. It would also be great to have a way to prevent this on vertical scroll/pan-y, as it is not always desirable. This library, for instance, is broken because the viewport gets resized as a picture is being swiped up or down: https://photoswipe.com 1818166 2 webkit-bug-importer 2021-11-29 02:40:20 -0800 <rdar://problem/85805111> 1836560 3 simon.fraser 2022-02-02 11:51:11 -0800 This is controlled by MobileSafari code. The above radar tracks that issue. 1862040 4 h.dodov 2022-04-16 03:06:41 -0700 I recently ran into this issue as well. In case more info is required, here's a Stack Overflow question: https://stackoverflow.com/questions/71717565/prevent-ios-safari-from-animating-its-address-bar-when-touch-action-none-is-used Also a reproduction site: https://safari-touch-action-bug.netlify.app/ And a demo video of the problem: https://www.youtube.com/shorts/RJAQp4YO4gg 1866167 5 gsnedders 2022-05-03 10:03:09 -0700 rdar://86966949 1868740 6 gsnedders 2022-05-13 06:35:13 -0700 This is being addressed within Safari, not WebKit. 1879442 7 bfulgham 2022-06-30 10:54:18 -0700 We believe that this bug was fixed in the iOS 16.0 Beta 1 (and newer). 1907257 8 h.dodov 2022-10-21 01:38:03 -0700 (In reply to Brent Fulgham from comment #7) > We believe that this bug was fixed in the iOS 16.0 Beta 1 (and newer). I just tested on iOS 16.0.3 (20A392) and the issue is fixed.