Job queue & mainsail config

I just had a pretty ugly accident where using the job queue, one of the jobs automatically started before I removed the previous print. Obviously the extruder crashed into the previous print, breaking my inductive sensor's holder, and the fan horns, thankfully it was just those and I had printed replacements because I'm paranoid and I've had similar accidents with other printers. I'm trying to find out why this happened though, and as far as I can tell, all the config related to the job queue is mainsail's and it seems to be setup to sensible defaults that shouldn't auto-start a job. Can anyone think of any settings I may be missing that could cause this?

I had it happen once before, but I managed to stop the previous one before it caused any damage. I just don't feel very confident using the job queue at all having seen this twice already.