Poor, spinning, Frigidaire skinny mini
The spin function is done entirely between the motor and a urethane roller. The belts are only for agitation, it’s certainly possible that the spin roller could be slipping, most likely cause our leaks from the pump seal, etc..
It’s also possible some lubrication got on the roller, which is not supposed to happen if you don’t see any leaks, try cleaning the rollers and drive pieces with alcohol.
John