Created attachment 97260 [details] mockup of window size I think making the window size closer to a 16:9 ratio would make the authentication window look really nice. Attached a mockup, I think 540*240 would look pretty good compared to 768*200 that the window's defaults currently are.
Thanks for your report. This dialog is not a part of the polkit project; it‘s provided by a desktop-specific component (“authentication agent”), in this case probably gnome-policykit (which has a bug tracker at bugzilla.gnome.org, so I’m afraid I can’t just reassign this report). Please re-report this against the appropriate desktop-specific authentication agent.
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