[Webkit-unassigned] [Bug 206855] New: Fullscreen API: Drag down gesture closes window on iPadOS, preventing interaction

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=206855

            Bug ID: 206855
           Summary: Fullscreen API: Drag down gesture closes window on
                    iPadOS, preventing interaction
           Product: WebKit
           Version: Safari 13
          Hardware: iPhone / iPad
                OS: iOS 13
            Status: NEW
          Severity: Major
          Priority: P2
         Component: Media
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: rigel at 8thwall.com

Created attachment 388944

  --> https://bugs.webkit.org/attachment.cgi?id=388944&action=review

screenshot of bug

Overview: For interactive sites designed to be used in fullscreen, a drag down gesture closes the fullscreen window. This happens frequently during casual use. 

Steps to Reproduce: 

1) Visit https://8w.8thwall.app/ios-fullscreen-bug on an iPad running iPadOS 13.3

2) Allow camera + motion access to begin AR experience and tap the nearest surface to plant trees.

3) Tap 'FULLSCREEN' button to open site in fullscreen. Continue to tap until inadvertently dragging down. 

Window exits fullscreen.

Expected Results: Fullscreen should not affect app functionality; user should continue to plant trees without disruption.

Build Date & Hardware: Tested in Safari on iPad Pro 11" running iPadOS 13.3 [latest stable release as of 1-27-2020]

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