[Webkit-unassigned] [Bug 278915] REGRESSION (macOS 15 Beta, Safari V18): User is not able to share screen for ~1 minute after Cancelling the action in a call and most of the options do not work while screen share recovers

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=278915

--- Comment #4 from youenn fablet <youennf at gmail.com> ---
>From the sysdiagnose, I can see the following:
2024-08-30 14:40:32.536043+0300 0x386E2    Default   0x0                  19699  0 com.apple.WebKit.GPU: (WebCore) [com.apple.WebKit:WebRTC] ScreenCaptureKitSharingSessionManager::promptForGetDisplayMedia - Screen

2024-08-30 14:40:32.553043+0300 0x21AD     Default   0x0                  1267   0 ControlCenter: (ControlCenter) [com.apple.controlcenter:SharedContentPicking] Beginning picker session
2024-08-30 14:40:33.990092+0300 0x21AD     Default   0x0                  1267   0 ControlCenter: (ControlCenter) [com.apple.controlcenter:SharedContentPicking] Cancelling picker session

2024-08-30 14:41:32.542738+0300 0x386E2    Error     0x0                  19699  0 com.apple.WebKit.GPU: (WebCore) [com.apple.WebKit:WebRTC] ScreenCaptureKitSharingSessionManager::promptForGetDisplayMedia nothing picked after 60.000000 seconds, cancelling.

We do not seem to have WebKit logging for the cancel prompt path.
It seems either WebKit is not being notified of picker being cancelled or it somehow is not processing well the cancel notification.

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