Poor text rendering in PDFs

utkangezer I have the same problem too, when I scroll up and down in a pdf in "page width" mode i OFTEN see missing or doubled lines of pixels in the rendered text. To my unqualified eye, it looks like when you change scrolling directions, somewhere just outside of the visible part of the pdf, rendering is restarted with an off-by-one error. Very very annoying. the best remedy for me is to do enough page down or page ups to "flush" the prerendered part of the document from memory and then an equal number  in the opposite directino to force re-rendering the page.  t took me 5 minutes of reading to quit working and start googling how to avoid this problem instead. It is intolerable.