For remembering one of the bugs caused by inputting the special objects, I think it's the cat caused it. I already place an object before then when I placed the final one at the party, it didn't trigger, until I replaced the object, and yeah it suddenly works. I tried on reloading before just to make sure there's no other weird shenanigans, and tried to input multiple things in the party, and yeah it still didn't work, likely the cat one has issues. That's one, tho unsure if there are any other situations that can cause the same issue.