Minor: icon and text label are not properly centered in dialog boxes asking for root password (i.e. Discover updates, certain system setting changes).
Created attachment 112060 [details] Misalignment
This is fixed in patch https://phabricator.kde.org/R121:d4ee26a76a217a5beed73c44080b3a49b7b681a0 I believe it will show up in the next Plasma release.