I confirm this bug with gedit, the calculator and text boxes in gtk3 -widget-factory. Changing the colour scheme in Gedit is a workaround. I have this problem with my user, on Ubuntu 16.10 upgraded from 16.04, but not logging in the guest session. So I guess the reason is some hidden setting left by 16.04
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1620806 Title: gedit edit window is transparent when using Ambiance and Radiance themes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gedit/+bug/1620806/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs