Obviously i am one of the "very unlucky few" because the problem persisted in most fonts(including the above recommended "Deja-Vu Sans Mono Book"), with all of the recommended ```line_height``` settings (including "=1;1"). For me it only seems to work with serif fonts for some reason?
BTW, I do not have high resolution settings or fancy 4k/8k monitors, Just a totally standard setup with the most recent Ubuntu-distro...