Described problem appears very often during typing (trouble is in the edited line). And what is interesting: when I stop typing edited line are redrawn correctly after a shot time (about 1 sec.)
I'm getting weird little half-characters on the bottom halves of the letters as I type. When I pause typing, they magically change to the letters they're supposed to be. (This may be because I have a hacked version of VA_X.DLL?)
... especially when he says, "...when I stop typing edited line are redrawn correctly after a shot time". I can't duplicate what he's seeing with his font, though...