I noticed something about fire.
I mentionned a few pages ago some kind of blob invasion in a town and the entrance to a slime pit in the middle of a street.
So to test around this blob apparently never ending spawning, i just used the debug menu and gave my character a M79 launcher and bazillons of 40mm incendiary grenades.
Then, let's say that after a -lot- of explosions and fire everywhere i think i finally got the blob spawning in control, meaning i don't see them anymore .
I even went inside of the slime pit and fired a bunch of incendiary grenade in every direction, that underground location is now a burning hell.
Now that said, i'll say that my scientific experimentation got some collateral damage, basically a big part of that town has its buildings in fire.
Then, i went to sleep outside of the town in a car without wheels, very comfortable, waited until midnight, or until "you're tired" appeared and slept.
Back to town, as i expected the fire was still raging, but still no blob, i went back into the car out of town, waited and slept (and debug gave me cooked meat and clean water to keep my grenade scientist alive) , i noticed that during the night there was rain (regular one, not acid) and even some thunderstorm nearby.
I got back to town and noticed the fire were still burning everywhere, and not only the buildings, but even the small fire in the middle of the streets caused by the grenade explosions.
Finding this odd, i went back to wait -> sleep in the car outside of town, again it rained during night, then went back into town, and still every single fire were still burning.
Testing again, this time i went in view of a fire and hold the Numpad5 key to waste turns doing nothing and i noticed that when in my view the fires in the middle of the street were slowly estingishing themselves.
Looking at the building , same.
To test more if it was just a coincidence, i shot again an incendiary grenade in the middle of the street, held Numpad5 and the fire was slowly put off after some time.
It seems when fires are not in view, they just do not stop apparently.