Firefox 114 - contextual menu doesn't follow Breeze theme

Firefox 114 introduced a new “feature” in the way it renders non-native menus so that they resemble GTK4 more closely. This has the knock on effect currently of making such menus look a bit odd in Breeze.

There’s a bug report here -

This “feature” can be reverted in about:config by setting widget.gtk.non-native-menu-styling to false.