HERE is how FireFox 30 looks now, in a full screen grab of my 1280x1024 native res monitor ^^^
Displayed are the other few add-ons which I already use, plus 'Classic Theme Restorer' and 'Throbber Restored'.
I also decided to test 'Personal Menu', as I have been using 'Movable FireFox Button' (from the same author) with my earlier FireFox and with PaleMoon.
The 'FireFox Button' which you see above belongs to the 'Personal Menu' add-on, is editable and movable, and I have turned off the one which belongs to 'Classic Theme Restorer'.
No browser elements were hidden.
The Windows task bar is on the LEFT-hand side, a 10+ year thing with me.
Please note how much height that there is for the web page content.