So, I did not do a clean install - I upgraded through the beta program exactly like N4Newbie described. But odd that it's working there? I did all the usual stuff - clear data, un/re-install...
But... I did find that on my device, if I open a note, then rotate the device so the screen rotates, it will expand the tiny note into a normal window, and that will persist when the screen rotates back. Kind of a pain, but if it works for you it may save you a rollback until maybe there's a fix or a patch.