White dots under icons in window title at HiDPI - white gap shadow
I'm running Xubuntu (XFCE) 20.04 on a 4k monitor, and after switching to x2 scale in Appearance and changing theme to Default-XHDPI in Window Manager, I'm getting these nasty white shadow dots under icons in window titlebars. Restarting X or changing theme to another and back, or redrawing the interface in any other way make them disappear for existing/new windows, but they get back in a moment.