While running around on the 1.08 experimental branch I noticed that when entering some buildings, my characters temperature raised to almost fatal levels. It happened several times, in different buildings including log houses & military barracks. My characters temperature would sometimes only raise to yellow on the HUD but other times would raise to red or even red flashing. Removal of all clothing items did not seem to have any effect. Leaving the building caused characters temperature to return to normal instantly instead of the gradual change which you would expect to see.