I have also just had this problem. Took my Sims on a date to Salty Paws saloon. All was fine until I interacted with the bar and suddenly everyone broke. No one was moving, my Sims wouldn't move or speak, the mixologist outside the bar wouldn't come inside. Everything froze. but time was still going on. Reset objects didn't fix anything. I eventually managed to get them home and when I got home I had gone back in time. It was an hour earlier than when I was out for the date? It's a bit strange that dates are now broken when a pack is out that revolves around dates...
