Pretty sure it's the patting scence. Whenever I pressed the "Finish" button the game freeze and also the time I talked to Rossete, too. It only occured on day 30 or probably when the "End for now" objective appeared and it never happened again after day 31, atleast for now.
The same happens when you do interactive at Musbroom house after you bring Rosette in there you go outside and go to the forest and come back she is sitting at the chair and when you do interactive both and try finish it screen gets stuck
