Black box around right click menu in linux

[anund]

What's missing to get the right click menu to render without this additional black border.

[anund]

Gtk seems to require additional compositing to for it's default style. A global override will fix this behaviour for gtk 4 apps.

~/.config/gtk-4.0/gtk.css

popover contents {
        border: 1px solid rgb(150,150,150);
        border-radius: 0;
        box-shadow: none;
}

Relevant gtk issue: https://gitlab.gnome.org/GNOME/gtk/-/issues/4815.

[00-kat]

Also, please note that running GTK applications without a compositor on X11 will cause this too.