I got your support email. It's normal for the top or bottom line of text to be partially cut off; there's no way to avoid that. But the app should never jump so far that it skips over any lines. In other words, if you have 100 lines of text and you can see 10 lines at a time, you might see lines 1-10, then lines 10-19, then lines 19-28, etc. You should not see lines 1-10, then lines 12-21, then 23-32, etc. Is that happening?