[Webkit-unassigned] [Bug 228278] iOS 15 scrollable containers cannot take up full height of screen

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=228278

--- Comment #2 from Liam DeBeasi <ldebeasi at gmail.com> ---
Created attachment 438073

  --> https://bugs.webkit.org/attachment.cgi?id=438073&action=review

Revised code reproduction

With iOS 15 beta 7 the reported behavior has changed. The non-body container can now take up the full viewport height; however, there are a few new behaviors that I consider to be unexpected/undesirable:

1. The URL bar collapses when scrolling down but never expands when scrolling back up.
2. Adding a sticky footer causes it to hidden by the URL bar when expanded. This does not happen when scrolling on the body. Trying to offset the sticky footer using env(safe-area-inset-bottom) has no effect.

I have attached a new code reproduction that shows the two issues.

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