[Fixed - 3.86] spruce twigs + fur colder than spruce twigs alone

[Plotinus]

Antton is just starting out and is still underdressed and cold. He has 114 spruce twigs and when he sleeps on them, he wakes up warm. He also has 7 superior lynx furs, a quest reward, and a harsh squirrel fur. Since he acquired the lynx furs, when he drops his inventory and sleeps on it, he gets the message that he lays on the fur and goes to sleep, and he wakes up cold. If he picks up the lynx furs and goes back to sleep on just the spruce twigs, he wakes up warm again.

I can believe that the spruce twigs are warmer individually than the lynx furs, but i'd expect them to be warmer combined or for the game to choose the warmer option.

Antton is wearing leather boots, fine linen trousers, fine woolen socks, masterwork fur coat (quest reward), and it's swidden month. I have a save available for Antton, but it's already late swidden so the weather might warm up at any time

[Sami]

There was something to fix with the math there, and now it should be alright. The problem was indeed that the combined effect was neglected.

Fixed - persists in 3.86 (stable)