Happened to me too. I posted a while back about problems with emetic poisoning the Italian Trump (can't remember his name). Yesterday tried it again and again so buggy. I stabbed him at the bottom of the stairs of the ice cream shop.
Instead of the public toilets nearby he made his way around the market, into the ICA building, into 47 room (which he can magically open), towards the bathroom and he bends over the thrashcan... only for a second though and he turned around for the toilet so I could finally drown his annoying ass. Good thing too since I was about to smash my controller.
The vomiting in the thrash can instead of the toilet has also been around the entire season. It's even worse if it's an Elusive Target.