Correct GTK 3/4 title bar theme in Xfce 4.16

[anon89812132]

@Drone4four

The problem is present in both Xfce 4.16 and Gnome 40

So, let me guess, you also have KDE Plasma installed ?
Either way, have a look here

How to restore default style of windows buttons in Gnome-Shell

That means it created inside ~/.config/gtk-3.0/ the following: assets/ - folder for the buttons to integrate with the Breeze theme colors.css - to match the colors of the color-scheme used in KDE Plasma window_decorations.css - to decorate the windows according to Breeze This 3 need to be removed and keep just gtk.css settings.ini Log out and back in once you remove the 3 above and all will be back to normal.