Same, my masterworked weapons are showing as tier 1 in the companion app (not all, but most … examples: my avalanche, edge transit, bygones, pluperfect, wishbringer, crooked fang, roar of the bear, misfit) and some are showing as masterworked tier 10 when they definitely are not (optative, imperative, sole survivor, subjunctive) … so for me, its not all shadowkeep weapons. I have not checked my armor. It also isn't showing weapon perks for several of them as well.