[Webkit-unassigned] [Bug 282070] New: REGRESSION: Exiting fullscreen in Safari 18 resets video controls

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=282070

            Bug ID: 282070
           Summary: REGRESSION: Exiting fullscreen in Safari 18 resets
                    video controls
           Product: WebKit
           Version: Safari 18
          Hardware: Mac (Apple Silicon)
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: opendarwin at lapcatsoftware.com

Created attachment 473037

  --> https://bugs.webkit.org/attachment.cgi?id=473037&action=review

Screenshot of the bug

I can reproduce this bug in Safari 18.0.1 and Safari Technology Preview 206 on macOS 15 Sequoia and macOS 14 Sonoma. The bug did not occur in Safari 17 or 16.

Steps to reproduce:
1) Open https://www.w3.org/2010/05/video/mediaevents.html in Safari 18
2) Start playing the video
3) Press the fullscreen button to enter fullscreen
4) Press the fullscreen button to exit fullscreen

Expected results: The video controls are displayed as they were before step 3, showing the timeline, fullscreen and PiP buttons, volume, Airplay, etc.

Actual results: Only the play/pause button is displayed. See the attached screenshot after.png.

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