On KDE this is happening due to lack of GTK3 theme support. You might want to try installing 'kde-config-gtk-style' and perhaps 'gtk3-engines-oxygen'.
Then you'll be able to choose GTK3 theme in System Settings --> Application Appearance --> Gtk Configuration. That's the only way I know how to fix it. Regards, Dmitry. -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]
