GoodNotes 6 has an annoying quirk: I'll be writing along and suddenly a word will vanish as I write it. IT's not any one word, nor any combination of strokes in particular. I would call it intermittent, but it happens with aggravating regularity. It's only begun since upgrading to 6; I'm writing the same way I did in GoodNotes 5 and it never did this. Am I alone in experiencing this issue?