The pocket door in my trailer is suspended from 2 trucks by a catch on each truck that is attached by screws to the top of the door.
The door can be released from the trucks by moving the catch horizontally allowing the door to drop. I suspect a screw has fallen out from the "back" truck.
The door should be supported by a roller on the floor at the edge of the opening.
It is levelling out on that roller as you close it, but the top is detached on one side.
Release the other catch from its truck and remove the door from the opening and inspect.
At least two pinched fingers must occur getting a RV pocket door out of the opening.
Example of pocket door hardware.