User-Manager: "Database disk not yet usable. Please wait."

RouterOS General
1

Did some experiment with User Manager on RB5009 and CCR2004.

Database moved to SSD attached to USB with suitable case.
Other things moved to disk (disk log, proxy cache…)

Now, after some time, user manager is disabled, settings are messed up (port is 1), and both show “Database disk not yet usable. Please wait.”
USB disk seems to work, i can see files in Files.

Not sure if related but I think there a too many sector writes? 155999 in 4d, 479778 total in one month

Edit: This happens just after the first reboot after moving UM db to SSD.

2

Spent few hours investigating this issue.

Apparently the issue happens when the db is stored on a non-top directory, for example if
/user-manager/database set db-path=disk3/cache-n-db/user-manager

If db in a top level directory it survive a reboot.
/user-manager/database set db-path=disk3/user-manager

Is this a bugto be reported?