RESOLVED MOVED239288
Scroll chaining on iOS does not occur in certain overflow cases 
https://bugs.webkit.org/show_bug.cgi?id=239288
Summary Scroll chaining on iOS does not occur in certain overflow cases
harry-moore
Reported 2022-04-13 09:21:49 PDT
If we scroll on an element that is overflowing, its scroll should chain to scroll its parent when its scroll position is at the end. In this codepen (https://codepen.io/HazzMan2409/pen/KKZxxGx) this does not happen when you scroll vertically on the child. There is an element in between the two vertically scrolling elements that scrolls in the opposite direction, I believe it is that element that is causing the bad behavior. Note that this behaves fine on desktop Safari.
Attachments
Add attachment proposed patch, testcase, etc.
Ryan Haddad
Comment 1 2022-04-21 17:12:13 PDT
rdar://92112692
Brent Fulgham
Comment 2 2022-06-23 16:36:40 PDT
We believe this was fixed in the current release.
Simon Fraser (smfr)
Comment 3 2022-06-23 16:45:28 PDT
Actually not fixed, but it's represented internally by the above radar.
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