It likely has something to do with the rotation of that chair vs the skeletal mesh of the player character that has spawned in. Notice- it’s on a perpendicular plane to the Host + Client2… but the camera really WANTS it to be on the same one.
As a test- try rotating that spawn point to face the same direction as the host’s spawn point and see what happens differently.
This could lead to a few solutions.
First would be that it’s not related at all and still spawns with the camera at 90 degrees Z.
Second would be that you have an issue where the camera is not getting its direction to spawn in from the playerspawn actor.
Thirdly it could be that the spawn point and anchor for that chair are misaligned, with the chair pointing 90 degrees off from its parent.
This seems to definitely be down to the spawn point actor you’re using.