Oh, just saw dbloc's question up there... anyway, every time I got trouble with font menus, it's more about the font library than the app itselfmaquito
Sorted it. Thanks people for having a look and the suggestions...
It was the transparency setting in Yosemite, turned it off and now it's fine. Weirdly, I found this setting under 'Accessibility' as opposed to 'UI shitness'.