My first 3 toons, Assassin, Juggernaut and Powertech all have crit relics, crit belt and crit bracers.
My new assassin (I know, I'm crazy) has burned through 130 biometric alloys and 1040 corusca gems trying to crit his first relic.
I have 3 friends that have been non stop crafting the new campaign relics trying to get a crit and over 30 crafted so far without a crit.
I really do agree that 1.2 has broken something and I've stopped attempting to craft these until we get an official response.
My guess is we will just randomly see something in some patch notes that said fixed an issue that was preventing relics from critting.