I have the same issue...
After receiving my phone back from the service center for a motherboard replacement (https://zentalk.asus.com/en/discussion/14763/dead-phone-after-update-from-73-to-110
), I noticed that the auto focus was, most of the time, not working.
The auto focus was working perfectly before, on version .73. Now it's broken on .119.
Tried to clear storage and cache of the app, not working.
Tried in pro mode, not working.
Tried to factory reset, not working.
I really hope that it is a firmware issue...
You can see a screenshot of the app settings and a video screen recording sample: