Unfortunately, I'm not really sure what is causing the issue. I am wondering if it is either:
- Hardware Issue on your end
- Different Screen Resolution which hid the leftover animations and since you could not see it, you might have released the right mouse button before the animation was completed.
- Somehow, you got out of the house without picking up the bag of leftovers.
So I updated both versions of the game with a cheat button. Press 'Q' during the prompt for leftovers to continue the conversation as if you showed the leftovers. Hope that this helps!