Bug 1367764, seems to have narrowed down the cause and come close to finding a solution.
** Description changed: When Ayatana overlay-scrollbar is enabled, GtkScrolledWindow widgets may be rendered without a background. Without composting these areas are black (openbox, gnome-shell) and with composting they are transparent (compiz, compton). Other visual glitches include content within the widget not clearing on redraw (everything becomes a cluttered mess) and with composting any content appearing under the transparent area on initial window mapping is retained (as if that were the widget background). For example, pavucontrol: https://ibb.co/eiRcBF - Original description: - Some GTK widgets have a black background. So far I have noticed this happening in g-c-c, gedit tab bar and dconf-editor details pane. This only happens when the applications are launched from gnome-shell, they work correctly when launched from a terminal. + Description from duplicate bug 1367764: + The overlay scrollbar module forces the window that should be scrolled to be native. Gtk is moving away from native windows and seems to have some hard-to-find regressions when using them. - I can reproduce on both my machines that were upgraded from Q, but not a - fresh install. + This causes a bunch of themeing issues (black/transparent backgrounds) + which can be worked around in the theme by setting backgrounds for these + widgets explicitely. That's a performance issue (since we're filling + backgrounds unnecessarily) and annoying, as these have to be only some + of the time for some widgets (e.g., GtkEventBox). - ProblemType: Bug - DistroRelease: Ubuntu 13.04 - Package: libgtk-3-0 3.7.12-1ubuntu1~build1 [origin: LP-PPA-gnome3-team-gnome3] - ProcVersionSignature: Ubuntu 3.8.0-16.26-generic 3.8.5 - Uname: Linux 3.8.0-16-generic x86_64 - NonfreeKernelModules: nvidia - ApportVersion: 2.9.2-0ubuntu5 - Architecture: amd64 - Date: Wed Apr 10 10:09:44 2013 - InstallationDate: Installed on 2012-09-23 (198 days ago) - InstallationMedia: Ubuntu GNOME Remix 12.10 "Quantal Quetzal" - Alpha amd64(20120922) - MarkForUpload: True - SourcePackage: gtk+3.0 - UpgradeStatus: No upgrade log present (probably fresh install) + Porting overlay-scrollbars to not use native windows might be worthwhile + if we decide to keep them. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1167079 Title: GtkScrolledWindow widgets (GTK3) have black or transparent backgrounds with Ayatana overlay-scrollbar To manage notifications about this bug go to: https://bugs.launchpad.net/ayatana-design/+bug/1167079/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
