When moving things around using the lasso tool in large documents I often experience that some text just randomly disappears. Sometimes it can be entire pages and it is very frustrating as a student when you just finished a page of an assignment and suddenly it is gone. If I restart the document then the text is back. Also I experience a lot of lagging when in a large document. I think these two things have to be fixed because I find GoodNotes the best note taking app on the market except for this rather disturbing error.