Thank you very much for playing! Well… the firepit will always slowly loose heat, but the cabin will freeze much faster if there’s any opening to the outside… a broken window, or an open door (I did forget to mention the door in my guide). Make sure to close the door when you enter and exit the cabin. Leaving it open will cause the fire to die just like a broken window.
Also, yeah, I noticed the bug with the items going through the cabin walls much too late in development for me to get to fixing it :(
Again, thank you very much for playing, and good luck if you give the game another try!