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Steps to reproduce

1. Start Call
2. Click Screen Share

Expected Behavior

1. The app prompts the system to select a specific application window for sharing.
2. Shares the selected application window seamlessly during the meeting.
3. Automatically stops screen sharing and releases screen-sharing resources when the call ends.

Actual Behavior

1. The app requests access to share all open windows instead of targeting a specific application window.
   • This requires the system to encode video streams for all open windows.
2. On Macs with a large number of open windows (e.g., 50), this causes significant performance degradation, potentially freezing the system due to the strain of encoding multiple video streams simultaneously.
3. The app fails to release screen or window-sharing resources even after the video meeting ends.
   • This leads to potential privacy concerns and further performance issues.
4. Screen share on Mac mutes microphone #951

Insert error logs here.