I'm playing with legacy family, I've been playing with this family for the past month and only started having this issue after last update. I have a fireplace in every room - every one of them is upgraded with a fireplace cover to reduce a risk of putting house on fire, additionally there's a campfire outside. During one sim day I got fire six times - even though I've removed all furniture from near the fireplaces and campfire. Literally everything started to catch a fire - chandelier placed two squares from a fireplace, trees and now just floor and grass (and by grass I don't mean any decorative bush or flowers, literal terrain grass is burning).
