I have the same problem with Iphone XR after connected via BT to 2022 Model 3. The Iphone, Text, Spotify and Apple music library were all able to play from Iphone and hear sound normal from Tesla speakers BUT when I played any video files like youtube or news with video from Iphone XR there was no sound came out of the Tesla speakers at all.
Note: My Tesla FW is up to date from Factory released 2 weeks old.
Any advice?