After all these years of enjoying Lego, I’ve finally encountered a set with a (minor) packing error

Just starting Minas Tirith, on bag one. Spent awhile trying to find the piece that goes where the red arrow is pointing (same piece that’s next to it). Never was able to find it, and thought maybe I lost it. However, after finishing bag one, I noticed I was over the very similar L shaped piece, even though I used the only two needed from bag one (red circles). Clearly the two pieces got mixed up at the factory or whatever. Not a huge deal, and I’ve already ordered the missing piece. Just...