@Jeremy, Yes, after restarting all Nautilus instances (actually just killing it did the trick) the problem is solved. Though seemingly only affected the Adwaita GTK+ theme as changing it to the Numix one fixed the issue.
** No longer affects: gnome-shell (Ubuntu) ** Also affects: nautilus (Ubuntu) Importance: Undecided Status: New ** Changed in: ubuntu-gnome Status: Incomplete => Fix Released ** Changed in: nautilus (Ubuntu) Status: New => Fix Released -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to nautilus in Ubuntu. https://bugs.launchpad.net/bugs/1586655 Title: Background grey even though set to image and image is displayed elsewhere Status in gnome-shell: Unknown Status in Ubuntu GNOME: Fix Released Status in nautilus package in Ubuntu: Fix Released Bug description: After upgrading to GNOME 3.20 on Ubuntu GNOME 16.04 I have found that even if I set my background again through the gnome-control-center that my background looks like this: Background_Not_Showing.png Even though it shows correctly in both of these places: Background_Shown_In_Settings.png Background_Shown_In_AO.png I have also tried setting the button via the right-click option in Nautilus but still the same results. To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-shell/+bug/1586655/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp