With the upgrade from openSUSE 13.1 to Leap KDE gets upgraded to Plasma 5. Since the, I have to enter the password 3 time - see https://bugzilla.opensuse.org/show_bug.cgi?id=959806 for detailed description. As proposed, reporting this bug upstream Reproducible: Always Steps to Reproduce: 1. see above 2. 3.
As this does not happen anymore in later versions (app 18.08) and nobody cares anyway, I close the bug