So I notice constantly with Light Sabre that my finesse and specialization don’t show and it feels like they aren’t working either because my ab drops so drastically. This usually occurs when you unequip it. The re-equip takes you back to pre-bonus ab. Logging out and back in with the LS equipped appear to be the only solution which obvious gets tiring.
I should ad ac on force armor can also disappear but in this case re-equip solves the problem.