Yeah there is still a lot of jankyness I need to fix. From your video it looks like the cat is colliding with some spatial data (as seen from the shadows it makes), but you're not getting the passthrough either. That spacial data may be from the test data that's in the project, but it should be replacing that with your own. Hmmm.
What are you using, Meta Scene API? MRUK? Or something else? In a previous jam (hackathon actually) I had been developing with MRUK which was great for developing and trying out different room meshes, but for the builds it just wouldn't trigger the Scene scan or use the on-device scene mesh. I never really got it figured out and had to ditch much of it and made a VR clicker game instead.