(Experienced on PS4 slim) Once you exit the barn the cutscene plays normally, but once you get control back at Quentin's place the mirror still shows the last frame of Quentin's animation in the cutscene, as seen in the image.
#Mirror of the cutscene after the tutorial bug
pine aurora
hot sage
Hi, thank you for letting us know of this. We will look through all your reported issues and do our best to address them. In the meantime, please ensure that the game is always up-to-date! Have a great day, and we hope you enjoy playing Hello Neighbor 2! 
pale comet
This also happened to me on Xbox Series X.