I have reproduced this right on the day the report came in, but can not reproduce anymore. Could you please try it again? It could be something changed in light-themes and this got fixed. If not, this is something ubuntu-specific as the RGBA theming was an upstream request, see https://bugzilla.gnome.org/show_bug.cgi?id=515907 for the upstream bug request and the bug which seems to be fixed as this bug report exists and this bug and the upstream are totally contradictory.
** Bug watch added: GNOME Bug Tracker #515907 https://bugzilla.gnome.org/show_bug.cgi?id=515907 ** Changed in: gnome-system-monitor (Ubuntu) Status: Confirmed => Incomplete ** Changed in: gnome-system-monitor (Ubuntu) Importance: Undecided => Low -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/919698 Title: The Window of System Monitor is transparent like the panel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-system-monitor/+bug/919698/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs