This issue can occur when a pilot moves a seat momentarily and the seat continues on its own almost like a sticky activation switch. Any direction.
The seats also have an electrical master switch on them.
Will turning the seat off within a certain time frame be the next memory item or split switches like stab trim?
Needle Knocker, my GUESS is that if you use the mechanical levers to adjust the seat is it will disconnect a clutch while you hold the lever and stop moving(or freely slide along the rails, or down rapidly). I can only guess the motor would stop when it hits a limit switch.
The seats can be used with manual adjustments only.