I would also like to add that I have encountered errors from this thread: Random horizontal lines appearing mid-text. I also came across this problem «Random horizontal lines» in a wide variety of notes. She met in notes containing more than 35,000-40000 characters. And she disappeared if this note is closed, and then open it again. I also encountered a mistake of scrolling long notes at which the note was not scrolled to the end, but suddenly returned to the beginning of the text. A similar error I also met in Chrome browser when watching long pages.
At the specified reasons, now I try to make notes a length of less than 35,000 characters.