[B 35] Session wordcount counting entire document

This might be related to this post: https://forum.literatureandlatte.com/t/manuscript-target-not-updating/48606/1

My session wordcount counted the entire wordcount in the document rather than what was written in the session. This was a fresh instance of Scrivener, so session WC should have started at zero. Actual session word count was 365 words.