Since 8.0 (I believe) the default Blizzard XP/AP bar text no longer displays a thousand separator ("," or ". " depending on your region I suppose). Nor does it show the percentage completion in brackets after the number.
I know there are a lot of addons to replace the standard XP/AP display functionality, but does anyone know of an addon or a way to get the thousand separator and % display back? Call me weird, but this a feature I miss quite a bit.