Holidays and going to classes causes a major problem, especially when it is test day. Professors don't take holidays off. If student doesn't come to class, he/she may flunk that class. This is a two pack conflict. What I did, I unchecked the skip work and school one on all holidays. (University vs Weather)
I accidentally left the presentation at the university cafeteria. When I came back for the presentation, it was gone. The presentations were no where to be found, no way to spawn another one. I had to de-roll them and wait for a whole week. My Sim student needed a vacation anyways.
Retailer Glitch. When my Sim owns a retailer shop, the retailer shop will refuse to function. What happens, when another Sim not part of the Household is a customer, the store remains idle. no employees present. So to resolve this, I sell the retailer store. All items remain. The store starts selling again.
The Dishwasher continues to wash and wash. So it won't stop. I have to put it in my household inventory for it to reset.
Why do sims go swimming rather than take a bath? When the Sim's hygiene drops red, they select swimming other than the shower. Hit the showers Sim!