I don’t know if the problem has been eliminated in UNA 13 RC, but in UNA 12 the latest UNA messenger update there is no camera change button and you can’t record video from the laptop to the messenger.
@Alexey Windows 11. It is observed in all browsers (Chrome, Yandex Browser, Microsoft Edge). FireFox has chosen the camera correctly and can see itself when recording, but the switch itself is also missing.
But at the same time, on any page of the website (for example, "Create a publication"), when recording from the camera, there is a camera switch and everything functions normally in any browser.