[Thermal Update] Dupes Leaving in the Middle of using Showers and Lavatories

Actually, now that I've watched more carefully, they do sometimes finish a visit in one sitting, but they still get up and leave sometimes. I literally saw one leave when they were almost done in one lavatory, go to the other one to pee a little in that one, and then go back to the one they were using a finish.

It's probably that your exhaust pipes are filling up. I had the same problem happen before the thermal update. I drew a diagram since I just closed the game but lmk if this helps at all.

 

Just wanted to thank you for the diagram .. totally makes sense.   Poop filled the lines because two people used the toilet while someone was taking a shower so it couldnt drain.