If that behavior is occurring then its a bug; its designed to work exactly as you have specified you want it to work. I'll take a look at it and see if I can figure out whats going on.
Edit: When you say it "keeps going to marker 1" do you mean that it is continuing to grind there and hasn't left, or that you stopped and restarted the bot and it went back to the level 1 marker?
Edit: When you say it "keeps going to marker 1" do you mean that it is continuing to grind there and hasn't left, or that you stopped and restarted the bot and it went back to the level 1 marker?