The latest update for the Window 10 version of MobileSheets has a fix in it for annotations bleeding between pages after cropping the page or resizing the annotations so that they extend outside the page. Unfortunately, if the page is cropped in on the top or left, it can cause annotations not to render on the bottom/right side of the page. Version 2.4.6 is available, so update to that version to fix the issue.
Mike
Mike