I'm honestly not so sure if this will be fixed. From what I read here it sounds completely typical for TS4 - Sims not facing each other when they're supposed to interact with each other, Sims playing musical chairs or just aimlessly walking in circles until they find a spot from where they'll start talking and then just moving aimlessly around again, incredibly long pauses between interactions (best example - eating) where they just stare at nothing.
I only saw some videos about the snowball fights. It looks lame and annoying, but at the same time the problem is the same we have with other interactions since the beginning of TS4 :neutral: