It sounds like cody was with you when you go to the ballroom (as u play as nick). which is totally wrong. I think is how the event has been set up. Try it without cody and see how it goes. If you want cody to go away, go outside and talk to the monster outside of the mansion and then get done with the puzzles with the stew and the music sheets
as for the screenshot problem. it sounds like I accidently left a plugin on (is for getting map images) so Is something I need to set in the list of bugs to fix
If you are in the discord server, I can help you more proper If you need a link, then let me know