This slip up takes place in the Lui kang verses Sub zero battle. Sub zero makes a big ice dome appear around himself ,right? OK. Look at Lui kang. His stance at first has him standing with his right hand outstretched, and then he swaps sides. Got it? So now his left hand is outstretched as he faces Sub zero. The dome around Sub zero gets bigger until it reaches Lui kang and "burns" his hand. Watch carefully now. Lui kang had his left arm outstretched, but an instant

later when his hand is burned, it's the right one and not the left, so his stance is not consistent with what it was the previous second. I hope that makes sense.