When I Hit RETURN, it gives me a dropdown all of a sudden

Never had this problem. Every time I hit RETURN while typing in the body of a text page, I get this:Screen Shot 2018-02-09 at 9.22.33 PM.png

It sounds that you toggled scriptwriting mode to on. I’m not at my Mac but this should help you to toggle back to prose: Format Menu > Scriptwriting > Script Mode (Format). Just remove the check mark. I’m pretty sure the keyboard command is CMD, 8.

That’s it! Thanks.

You’re welcome.
I have experience with this :laughing: . The shortcut is CMD,8. I’ve more than a few times miskeyed it rather than the intended CMD,I.