Having the same issue with 2 of 4 of the same locks. they have been installed for only 2 weeks.
This thread has been pretty helpful. I have narrowed down that the 2 locks having the issue are usually open during the day, and do not have auto lock on, but the 2 OK ones are locked, and have auto lock on.
The office manager is testing the autolock theory with one of the ones showing the issue