I was loading old saves (on lower difficulties) to check the fully upgraded house, and I noticed burglar corpses in front of security features. On my current Dominating run that only has the bare minimum for crafting stations, I noticed items missing from my lockers, and then I got ambushed by a burglar holding some of my items I had stored.
Are these burglar events new to 1.3.0.15? I don't remember getting them before, and now I've gotten it multiple times within 30 minutes of messing around with housing, though across multiple runs.
