I have both the NDI HX Camera app and the TriCaster Camera app on my Pixel 5 running Android 12. I didn't perform exhaustive tests, but both apps seem to be working as expected.
I'm told, however, that a bugfix prepared some time ago had inadvertently not been propagated to the Play store. This has been corrected for a little while now.
Finally, to explain - the TriCaster and the new CaptureCast variant are basically he same app, but enabled without cost when the corresponding NewTek product is detected on the network.