Odd word count issues

I’ve been having some trouble with the word count in a document I’m working on. I check the full count using Project > Project Statistics… but it’s not the correct count; it’s off by 60 words. It corrects itself when I close out of Scrivener and go back in, however. This has happened to me three times lately and each time, it’s off by 60. I’m running it on Mac Sierra 10.12.6.