footnotes change formatting of rest of paragraph [closed]

edit

I reopened a document I had worked on a few weeks ago, and now in the main body of the document the text after a superscript footnote number are all in a much smaller font. When I highlight the text in the small font, the font is still given as 12 (the font size it's supposed to be) in the format toolbar. When I scroll up and down, sometimes some text disappears entirely, but reappears when I scroll away and then back to that section.

I'm using Windows 8 and I just updated Libre Office to see if that would fix the problem, but it hasn't.