PDF Compile Book Cuts Off Text

I’m compiling my novel into a paperback as a pdf file. On a few pages, it cuts off the top sentence of the next page and puts it on the bottom of the previous page. It only does this for a few random pages. Does anyone know how to fix this? I attached examples. Thank you so much!:0)

I have Scrivener 1.9.9.0, on Windows.
TextCutOff2.jpg
TextCutOff1.jpg

This is a support question, not a usage question. Moving to a better forum. – Katherine