They look as intended. I see that you have even enabled the menu icons on the first image. Unless you loaded a different theme without restarting Gimp (menu icons will go away when you restart Gimp).
If you want to permanently enable the menu icons for a theme, edit its gtkrc file and replace 0 with 1 in the the following line:
gtk-menu-images = 0
Thanks again for the feedback Zero01!
If you want to permanently enable the menu icons for a theme, edit its gtkrc file and replace 0 with 1 in the the following line:
gtk-menu-images = 0
Thanks again for the feedback Zero01!
Gimp & Stuff: https://www.deviantart.com/migf1