Actually I use many cameras on my scene, the problem is that the Sequencer ignores all of them and starts recording from the ground and any location, If I try to add the camera, then it won’t record from the other cameras either or at least try and you can not set the camera recording area in that option, so when you have a Sequence with multiple cameras.
I think this is anothes sequencer bug, we might not be able to fix it… UE5.1 sequencer is just broken.