Vitality at level 50 continues to be used even though we are at the level cap. It's gonna be really sad if when DoF rolls around i have 0% vitality unless i don't do any content for like the week before the server launches. Is this intended so we buy vitality pots at the start of every expansion or an oversight?
Your not supposed to accumilate vitality when playing at max level. Never had and never will be a thing.
You gain .5% Vit per hour. So roughly 8 days before DoF, turn off your experience gain just try and tolerate the annoying message.