Before the last update my character had 100 of strenght. Now the stat of strenght is 10 points less. That's because the gear my character wears for arms (the legacy's oath gauntlet) has lost that amount of points. I encountered this problem with 2 exotic arms too, the doom fang pauldron and the synthoceps, but i didn't remember their exact stats before the update, so i cannot say if they are affected by the same issue. Instead i remember perfectly that my legendary gear from Europa's raid once had more stat in strenght. I'm sure about that because the actual total in strenght isn't in the order of 100 but 90 (without considering the Protective Light mod i usually apply on my titan).