[Webkit-unassigned] [Bug 206853] New: Safari incorrectly assumes user is typing when using Fullscreen API in iPadOS 13

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=206853

            Bug ID: 206853
           Summary: Safari incorrectly assumes user is typing when using
                    Fullscreen API in iPadOS 13
           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 388938

  --> https://bugs.webkit.org/attachment.cgi?id=388938&action=review

screenshot of bug

Overview: For interactive sites designed to be used in fullscreen, a warning appears in iPad OS (13.3) Safari that incorrectly assumes the user is typing. Even after selecting 'Stay in Full Screen' the dialog continues to appear repeatedly and indefinitely.

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 the warning appears. 

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

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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