[Webkit-unassigned] [Bug 231878] New: iOS 15 safari toolbar shows & hides when scrolling within a scrollable element

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=231878

            Bug ID: 231878
           Summary: iOS 15 safari toolbar shows & hides when scrolling
                    within a scrollable element
           Product: WebKit
           Version: Safari 15
          Hardware: iPhone / iPad
                OS: Other
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: alexfoxy at gmail.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

On iOS 15 scrolling within an element causes the window to resize / toolbar to disappear. On iOS 14 this would only happen when the body scrolled.

Video of bug: https://www.youtube.com/watch?v=F7cwYdw1rnc

Also see difference in behaviour in iOS14/15: 
iOS 15: https://i.stack.imgur.com/ctXmi.gif
iOS 14: https://i.stack.imgur.com/9QcC2.gif

I have tried various fixes e.g. overscroll-behavior to no avail.

Will this be fixed in the future?

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