I have managed to workaround problems with priviledge windows by restarting polkit-kde-authentication-agent-1:
killall polkit-kde-authentication-agent-1 /usr/lib/x86_64-linux-gnu/libexec/polkit-kde-authentication-agent-1 &
Seems to work fine. Please confirm if it works for you.
I have managed to workaround problems with priviledge windows by restarting polkit- kde-authenticat ion-agent- 1:
killall polkit- kde-authenticat ion-agent- 1 x86_64- linux-gnu/ libexec/ polkit- kde-authenticat ion-agent- 1 &
/usr/lib/
Seems to work fine. Please confirm if it works for you.