I ran into this accidentally, and instead of calling it a bug, I'll call it a nifty hack.
When taking calibration subs during the day, or otherwise working on stuff that wants to have the AVX / NexStar+ powered up, it can be annoying to have the rotisserie motor actually running. I imagine a flat screen balanced no top of an upright OTA crashing to the floor as the RA spins, etc. Sure, there's a menu item to turn off tracking, but there's an easier way.
If I have my Raspberry Pi physically connected to the hand controller (USB cable), I can turn on the mount and run through the initialization sequence, ending in a Quick Align as usual. That starts the RA motor. If I then cycle power on the mount (off, then on) the motor is apparently not reinitialized (so it stops spinning), but the hand controller (being powered from USB) stays initialized and running.
From there I can take images, play with exposures, etc. all afternoon, without the motor running, and without having to dive into menus and such to turn off tracking. Simple click, click of the on/off switch, and I'm ready to go.