[BY DESIGN] [S] Sims dripping in summer/no rain

I believe this concern is by design. When loading up the saves provided by @logionX, before the NPCs had received the Uncomfortably Wet buff, they were all located in San Myshuno where it was raining. When I traveled to Oasis Springs, where it wasn't raining, the Sims were still dripping but that makes sense, they still had the Uncomfortably Wet buff. I waited 2-3 Sim-hours and they stopped dripping, which also makes sense, the buff had expired naturally. There are certain interactions that can decrease the time remaining on Uncomfortably Wet, such as warming yourself near the fireplace, but travelling isn't one of those interactions. I verified this with the technical designer and engineer who implemented this feature and they agreed. 

If you suspect that the Uncomfortably Wet buff is lasting longer than 2-3 hours, or perhaps the timer on it is somehow resetting, that seems potentially like a bug. But I was unable to reproduce that, in my own experience the buff goes away after a few hours, as expected.