While hiking, I followed a course. I have the maps display visible. When I look at my watch, with a gesture to wake it, the map is in zoom mode.
This happened every time I looked. I did not touch the screen or buttons in between.
The screen is not in aod. The firmware is the latest version.
One add thing. I paused the activity to resume later. After I resumed the activity, this behavior did not happen occur anymore.