I see this immediately after upgrading from 16.04 to 16.10. It's also the case with the result area in gnome-calculator. A screenshot is attached.
** Attachment added: "Screenshot from 2016-10-21 18-55-22.png" https://bugs.launchpad.net/ubuntu/+source/ubuntu-themes/+bug/1620806/+attachment/4764943/+files/Screenshot%20from%202016-10-21%2018-55-22.png ** Information type changed from Public to Public Security -- 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