Revit Background Preview (Geometry) not Showing?

I’m having an issue where the blue geometry preview that appears in the Revit model is not showing. It works with a new model but not with the model I am trying to work in. Has anyone encountered this issue? Is there a visibility setting for this dynamo preview inside Revit? I can’t troubleshoot my script without this preview.

I have it enabled in Dynamo:

Thanks for any help!

Same Dynamo version and Revit version?

Yes to both. I have resolved the issue for the time being using the Dynamo Background Preview; however, I’m still not sure why it wasn’t showing in Revit