No title from achievement =(

hi all
so i finally killed lich king yesterday and upon completion of the achievement i went to clicky on the title just to make sure it was there and oh my what a surprise, it was not

thinking it was a silly glitch i proceeded to restart sure that this would fix itself upon a fresh log on
no go

after that i tried a no interface/cache/wtf from-launcher startup and same thing, title is just not there

and im aware there is a drop down menu and you can scroll up and down in there but i only have like 5 titles and kingslayer is just not one of them :/

is there anything else i can try?

thanks.