It seems to be that there is an issue using different user accounts with the libreelec revisions > 8.2.x.
I am using different accounts for different libraries (e.g. kids and adults). The liberaries are external on a XML database.
With updating from 8.0.x to a greater revision the login of the other users process stucks. Whole machine hangs up.
Only Master User can be logged in. If I downgrade the user logins are working fine again.
HW:
Media Player: Raspberry Pi B 3 / B 2
Media Server: Synology 213air