polkit dialog for user without password defaults to cancel
There is a minor usability issue for users without a root password (such things happen)
The polkit dialog pops up, asking for authorization to become the administrator. In case I have to enter a password, I type it, press enter, and am being granted.
In case no password is needed though, pressing enter 'cancells' the dialog as cancel has the default focus. (this used not to be the case in GNOME 3.34)
Edited by Dominique Leuenberger