Thanks for the reply!
Do you see if Center Stage is enabled? The link is located in the previous message. This will help further determine if the behavior is expected or not.
Just in case, here's the details again:
"With macOS Monterey 12.3 or later, you can use Center Stage when you have an Apple Studio Display connected to your Mac. Center Stage keeps you and anyone else with you centered in the frame as you move around during a video call.
- In the FaceTime app
on your Mac during a video call, click Control Center
in the menu bar. - Click Video Effects, then select Center Stage. (Optionally, select Portrait to use both video effects at the same time.)
- To turn Center Stage off, deselect Center Stage."
Change video effects for FaceTime calls on Mac
All the best.