iPhone 11 as a secondary camera for zoom- not changing orientation

I’m having an issue with my iPhone 11 not adjusting the orientation during a zoom presentation where the phone is being used as a secondary camera ( aka shared screen).

If I go to any other app on the phone, the orientation adjusts, and reflects the adjustment on my zoom presentation, but I switch back to camera mode and I automatically get portrait.

to be clear, the phone shows the change in orientation, but it doesn’t reflect on the zoom platform as such.

This only occurs in camera mode.

iphone 11 UTD

imac 27” UTD

tethered physically.

please advise.