Accepted the "suggestion" to upgrade to 29.0.1 which was to be just a\nsecurity update. Didn't realise I was at 28 and that this was far more\nthan a security update. Spent a few hours undoing the UI changes,\ninstalling the "classic theme restorer" extension and then within it,\nhaving to play with settings.\n\nThe one thing I was not able to undo: grabbing anywhere in the top bars\n(not just the title bar) causes the window to move. Fairly annoying.\n\n(on my machine, a slight move of a window causing it to overlap into the\nadjoining screen causes major performance degradation).\n\n\nIs it normal that applications can designate areas inside the window as\ngrabbable for purpose of moving window ? I thought this was limited to\nthe title bar.\n\nOr is this a case of Firefox creating a huge title bar, and faking a\nreal one inside (it can be removed, and in fact is removed by default).