Ability damage bonus from upgrading armor not working?

Oh well, I guess this will never get fixed now. Pretty much I've ignored ability damage stat from armor, and stopped upgrading them at all, and only looked at total ability damage, when deciding which armor to use. Looks like all unique armors have a massive advantage here, since their "hidden" base ability damage bonus is the greatest of all, while for most of the other armors it depends on when you obtained the armor (since upgrades do not work).