I’m a quarter of the way through my book, one of many I’ve written using Scrivener when it got super-hinky. I moved on to the next scene but the font was different - now courier prime all caps - I recognized it as screenplay format, at least I think it is. Any new scene I add appears as a yellow three hole punch icon in the binder and it defaults to the courier prime all caps. I succeeded in copying and pasting a bit of text from the previous scene to override - the only way it would work, but each new scene is in the screenplay format.
The program crashed the first time I attempted to change the font and when it came back, it seems to be stuck halfway between novel format and screenplay format.