I have a similar issue which appears to be partially documented in some online forums.
The identical problem occurs on two new Lenovo tablets:
- Lenovo Tab M10 Plus, Android 12
- Lenovo Tab P11 Plus, Android 12
I installed the Facebook app from Google Play, but when I launch the app, I receive a blank app page with an error: "Contents can't be autofilled".
If I change the Autofill Service (Settings>Passwords & accounts) to Autofill service = "None", then re-launch the Facebook app, I no longer get the error, but instead I get a blank app page without any login for Facebook.
I saw somewhere online that changing the Autofill service to a third party app service, but leaving the Google Password service enabled would solve the problem. I tried this approach with no success. Note that clearing data cache doesn't solve the problem.
I am out of ideas aside from try to revert to Adroid 11. Any help would be appreciated.