In a wayland session, no menu icons are shown

Tested via weston session.

Neither in the "old" context menu of the bookmark view, nor in the new menus.

Nemo shows the same defect, so probably rather related to the weston session.

(Did not get Caja, or PCManFM to start in the weston session, these somwwhat are lauched for my X11 session instead .. and Nautilus has no menu-icons)