Game mode: [Online]
Upon shutting off the decay system on a private server, often times buildings instantly collapse. This seems to possibly be connected to buildings that have been upgraded at least from T1 to T2. And on top of that, the decay system just turns itself back on after a server restart.
Steps on how to reproduce issue:
1.Turn off decay system.
2.Watch buildings explode.
3.Watch decay system turn itself back on after restart.
4.Slowly step away from the turn decay off checkbox.