Start pwsafe in readonly mode.
Enter password. The list of password(categorie)s is displayed.
Wait for time-out. The window is iconized.
When the application is reactivated, the 'enter safe combination' window is displayed.
At this point, it is not possible to close the application without entering the password.
I think it should be possible to close the application without password, since there are no changes.
pwsafe 0.92(BETA) on Fedora.