@Daniel: Maybe I answered a bit hasty. I see this issue over and over again without any Nvidia driver. But I do have a Nvidia card, if that may be related.
Not sure about the root cause of this bug. We know that it happens with the Ubuntu font and that that font was changed in the mantic cycle. But is the font change to blame, or is it maybe some inability in Gtk/Pango/whatever to deal with a font change smoothly? Or is it a limitation in fontconfig? Would the issue show up if some other font in use had been changed, even if it was not set via the font-name dconf value?
@Daniel: Maybe I answered a bit hasty. I see this issue over and over again without any Nvidia driver. But I do have a Nvidia card, if that may be related.
Not sure about the root cause of this bug. We know that it happens with the Ubuntu font and that that font was changed in the mantic cycle. But is the font change to blame, or is it maybe some inability in Gtk/Pango/whatever to deal with a font change smoothly? Or is it a limitation in fontconfig? Would the issue show up if some other font in use had been changed, even if it was not set via the font-name dconf value?
Those are thoughts in my head.