I have now filed a report upstream on this issue: https://bugzilla.gnome.org/show_bug.cgi?id=763769
** Bug watch added: GNOME Bug Tracker #763769 https://bugzilla.gnome.org/show_bug.cgi?id=763769 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-system-monitor in Ubuntu. https://bugs.launchpad.net/bugs/1558156 Title: System Monitor numbers changes but not graphs when viewing it through the Activities Overview (this happens often but not all the time) Status in Ubuntu GNOME: New Status in gnome-shell package in Ubuntu: New Status in gnome-system-monitor package in Ubuntu: New Bug description: Although I have noticed this issue only with the System Monitor I do not know if it is isolated to it, but for some reason sometimes (about half the time) when viewing the System Monitor through the Activities Overview I get this strange effect where the numbers are clearly changing but the graphs are not: System_Monitor_Activities_Overview_Only_Numbers_Changing.mp4 And when I click on the application the graphs often then show something very different and carry as they were, so I'm going to say that I don't think that this is just an accurate display of the System Monitor going wrong, but rather something meaning that it is not displayed properly. I can also close and reopen the Activities Overview and the System Monitor will only snap out of it when I actually go to it (though I will have to test if it only corrects the problem when I go to it through the Activities Overview, but I think that that is the case). I am running Ubuntu GNOME 15.10 with GNOME 3.18, but I am sure that this issue was also present under Ubuntu GNOME 15.04 with GNOME 3.16. I only really do fresh installs so it's not going to just be faulty installation thing as I do them a lot. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-gnome/+bug/1558156/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp