Hmm... after experiencing this a few more times, it seems like this is potentially a few different bugs. The tiny widgets is always happening, and seems to just be a flaw with older GTK programs (explaining why it occurs in Firefox).
As for the windows not registering the scaling factor, it looks like something under the control of lightdm is breaking. "restart lightdm" seems to solve the problem whenever it occurs. Another piece of evidence for this is that Firefox's tabs regress to an old unstyled form whenever the issue occurs. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1311965 Title: UI scaling inconsistent when using new display scaling option To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1311965/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs