Missing all the small icons on submenus. Ubuntu 18.10 Gnome 3.30.1

I have noticed that in my Ubunto 18.10/Gnome 3.10.1 it is missing all the small icons that should be on the left side of the application submenus. This problem occurs in all installed software. Even those that are installed together with Ubunto. Applications work flawlessly, but the absence of these little icons slows the understanding of complex application functions a bit.Any help?

Attached is a print of my screen with a submenu where the icons are missing.enter image description here