Power seat back moving?!

[AZjeff]

My daughter has a 2015 Mazda CX-5 she bought new. She asked me to come look at it because the seatback will recline slightly overnight sometimes. I ran it forward/back moved the seat ahead/back pushed & pulled and couldn't find anything wrong. The button feels fine and works exactly as you'd expect. I've never heard of a power seat moving on it's own while parked. AZ car so rusty connections somewhere are highly unlikely. Any ideas?

 

[dishdude]

Does it have memory seats?

 

[AZjeff]

Don't think so it's low trim level. No buttons on the dash.