From team page, depth chart - clicking on the name / "i" icon to view the player card for RBs results in ONLY core and QB related abilities being displayed.
Looking at player weights, the RB ones are exactly the same as for QBs - hence QBs attributes only displayed for RBs I view.
However... all I changed recently on weightings was to reduce one skill on RBs. QB ratings not been touched. It's as if saving copied all the QB weights to the RB weights.