I have had all the same issues as listed here, and in the previous ticket.
It got to the point where microsoft replaced my surface 8, however the problem is still happening.
I used the zoom application for a meeting, after a while (40 mins or so), my camera on the call froze, then caused the zoom meeting to crash. After that the white camera light was on, however I could not use the camera for facial recognition to login, or on zoom.
Rebooting did not help. I deleted the zoom application and rebooted, and still no improvement. I then uninstalled the camera, as that worked every time with the previous device, and this did fix the issue. I then used zoom on the web rather than the app, and I did not have the problem with the camera.
I had previously done this multiple times, cleaned the zoom application etc, until they resorted to replacing the device.
The issue is clearly related to the device running the zoom application, however no one seems to be able to advise on how to permanently fix this solution.
Any actual solutions would be extremely appreciated.