I see someone else posted this 2 years ago here: MK2 just takes off when jogging (keeps going on it's own).
I never had this happen until 1.51. and it happened twice while jogging very few times.
Also, when this happens, the machine just keeps on going but gSender does not register that, making it lose the coordinate.
Last time this happened, it was after I tried to position the router, and I was clicking multiple times (not nearly as fast as double clicking fast, but you get the idea) as I had it in precise jogging speed.