I can confirm the issue, and I can't imagine that it's caused by any control bindings. The aircraft behaved this way for me at night.
I took off, engaged the autopilot, and went to bed. During the night, I heard the sound of the autopilot disconnecting, and the aircraft started turning left.
I've experienced this on other flights as well, even though I didn’t make any inputs. I even monitored my joystick axes, and there was no movement. Yet, the same issue kept occurring—AP disconnects, followed by a nice left turn.
After one landing, while taxiing to the gate, I noticed that the left wing’s flaps were still up, even though I had only been steering with the rudder pedals.