I don't know if this bug was reported, but after take Ruben's trial, when we are lube and try to search the stuff, he asked for us, if we go to Buffalo, Ruben would appear despite he shouldn't be there.
There's also that you can't "talk" to Taureau in his game at the green mansion, so you can't give him the rainbow popsicle. Also is there an event when the gift breaks on his game? Like I got it broken, but nothing happened.
Also, when we do the perfume event (really hilarious btw xD) it is normal that we can't longer enter to the mermaid domain?