Odd screen rotation misbehavior

[Matthew Saltzman]

I have a Lenovo Yoga X1 (2nd gen) with Intel graphics, running GNOME
(fully up to date). Recently, the screen rotation lock control in the
system menu (drop-down in the upper right corner) disappeared and the
screen stopped auto-rotating. I had been running in Xorg mode because
certain Zoom features don't work under Wayland. At some point, I
switched to Wayland mode and the control reappeared and auto-rotation
started working. That worked for a while, but then the control
disappeared again. I switched back to Xorg mode and the control is
back.

Anyone have any idea what's going on and/or how I can get consistent
behavior?

Thanks for any hints.