I found in .xsession-errors:
QSqlDatabase: QSQLCIPHER driver not loaded
QSqlDatabase: available drivers: QSQLITE QMYSQL QMYSQL3
This does not happen when I restart Enpass.
On a machine where it works I have a process:
/opt/Enpass/bin/Enpass startWithTray
Where the problem exists:
/opt/Enpass/bin/Enpass -session 101.....
Maybe the autostart 'startWithTray' doesn't work for some reason and KDE restart Enpass without the wrapper script because of restoring the session, but then the environment for Enpass is missing and QSQLCIPHER driver is not found?!
Any idea how to fix that?