There's 7 endings + variations if you have the ledger and speak to the guy in front of the mission or not, plenty of them can be achieved in different ways. Also at some point I'll remove the endings and put the continuity, so depending on your playthrough you will either get the mission to enter the mansion or you'll get to the mansion by exploring the world on your own.
I don't know why this unending loop is happening, gotta check what is missing in the scripting. Thanks for letting me know!