This issue is beginning to wear on me. I’ve had one lockup where I received an error message on the screen (can’t remember exactly which) which required pulling the battery. But I’ve had dozens of instances where the camera suddenly resets itself, as if the power button had been briefly switched from on to off, and back to on.
I had been just dealing with it but now when it happens with the Tamron 35 SP mounted to the Canon adapter, I lose AF capability until I reset the power manually *and* re-mount the lens.
This happens with SanDisk, Sony & Prograde cards, RF lenses and/or the Canon adapter.
I really hope this is addressed in the upcoming firmware.