I had the same problem with Steam after last update Gtk-Message: Failed to load module "overlay-scrollbar". I did search and found this hint: clear steam cache previous installation by on terminal
rm -Rf ~/.steam/steam/appcache and install again by steam .deb from steam website. I hope help to solve the Steam problem by "overlay-scrollbar" -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1134202 Title: Removing overlay-scrollbar causes lots of noise To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/overlay-scrollbar/+bug/1134202/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs