Paragraph format keeps changing

Hi. I’m running Scrivener for Windows version 2.9.9.16. For the record, I’m really happy with the release.
My current issue is that it doesn’t matter how I format a text document in the research folder, as soon as I hit return at the end of it the new line changes the paragraph formatting. For whatever reason, it goes to 32 point paragraph spacing and changes the left margins. 32 points seems awfully arbitrary, I don’t know if I’ve used that spacing anywhere before this.
Changing back to single spacing, once again a new line results in 32 point spacing.

…Brian