Riding boats, minecarts, horses etc when morphed still assumes the player is normal height.

Players using short morphs will find their cameras under water when riding in a boat, or potentially embedded in the ground when riding a minecart. The models also appear below the ridden entity for the same reason.

@TTFTCUTS thanks for reporting!

I'm not sure whether fixing the Y offset is possible since all vehicles calculate rider's Y offset which is hardcoded into player's method. About player's POV under the water, this can be solved by disabling POV modification in the mod options.

If you have any ideas how to fix this, let me know :)