[Webkit-unassigned] [Bug 247883] New: REGRESSION (MacOS 13 + Safari 16.1) ScreenShare does not work, the shared content not available for other Users if User tries to share entire screen using Safari

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=247883

            Bug ID: 247883
           Summary: REGRESSION (MacOS 13 + Safari 16.1) ScreenShare does
                    not work, the shared content not available for other
                    Users if User tries to share entire screen using
                    Safari
           Product: WebKit
           Version: Safari 16
          Hardware: Mac (Apple Silicon)
                OS: macOS 13
            Status: NEW
          Severity: Critical
          Priority: P2
         Component: WebRTC
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: madara.freimane at testdevlab.com
                CC: youennf at gmail.com

Summary:
Starting with MacOS 13 and using Safari browser, we are not able share the screen, the shared content not available for other participants in a call.

Tested devices and browsers:
Bug is reproducible on:
- MacBook Pro (M1, 2020, MacOS Ventura 13.0) and Safari (V16.1 (18614.2.9.1.12))
- MacBook Pro (M1, MacOS Ventura 13.0.1) and Safari (V16.1 (18614.2.9.1.12))

Bug is not reproducible on:
- MacBook Pro (M1, MacOS Ventura 13.0) and Google Chrome (V107.0.5304.87)
- MacBook Pro (Intel, 2020, MacOS Monterey 12.6) and Safari (V 16.0 (17614.1.25.9.10, 17614))
- MacBook Pro (Intel, 2020, MacOS Monterey 12.6.1) and Safari (V16.1 (17614.2.9.1.13, 17614))

Use case:
Preconditions:
User is in an active WebRTC call on Safari

Steps:
MacOS User who uses Safari starts share the entire screen

Actual result:
When sharing just the window, indications of screenshare are on but other users don't see what is being shared. Full screen sharing doesn't work at all

Expected result:
User is able to share their screen /window and others are able to see the screen/window

Reproducibility:
100%

Added sysdiagnostics file:
https://drive.google.com/file/d/1_BdTKjo1xgAryG2Wp64MYFxmQ7lCgTTD/view?usp=share_link
Bug reproduced at 11:08 am, 14.11.2022. (EET time zone).

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