Campfire keeps lighting chairs on fire HELP!

I don't have a problem with the campfire if they just light it and use it as is. At some point though, the game changed and now Sims obsessively keep adding logs to the fire. That's when it became dangerous. As long as I'm controlling all the Sims using it and can cancel the 'add log to fire' before it drops into the queue, it's still okay to use. Unfortunately, that can be very difficult to catch in time, so fires ensue.