The workaround for bug 370362 (https://cgit.kde.org/plasma-desktop.git/commit/?id=52ba0122ebeb6aa21d23936d0fbef20f7d9f208f) not only uses an icon that does not fit the plasma theme now, it also does not use the same theme as sddm anymore.
It's a symptom of the fact that we have 2 icon themes (plasma and non plasma) with icons looking different where we want them to look the same. I don't think my thing was a workaround or wrong but maybe in the wrong place. I should have just deleted the plasma icon.
(In reply to David Edmundson from comment #1) > It's a symptom of the fact that we have 2 icon themes (plasma and non > plasma) with icons looking different where we want them to look the same. > > I don't think my thing was a workaround or wrong but maybe in the wrong > place. IMO it should be fixed in kde-user-manager instead to use the themed icon. > I should have just deleted the plasma icon. No, please not. The non-plasma icon really does not fit to breeze dark or breeze.
I noticed that currently there are three different icons - in Kickoff, Login Screen (Breeze SDDM theme) and in Leave dialog. Avatar icon in Leave dialog looks more theme neutral for me and can be a candidate for using it system-wide. Distribution: KDE neon Developer Edition Unstable Branches KDE Plasma Version: 5.10.90 KDE Frameworks Version: 5.37.0 Qt Version: 5.9.1 Kernel Version: 4.10.0-32-generic
Fixed with https://cgit.kde.org/breeze-icons.git/commit/?id=1c6e30d312c74a16ec6a1d0a9f2e31402c46516d