I saw that on beta mobile doing anything outside the normal que would disrupt the map. Especially when before you start a match and you remove or add players the mao would get disrupted.
Also since he reported a bug I will too.
Anytime you add a large amount of troops say 100 units. Then some of the times when you start the match the units go off screen and die. When all that needs to be done is move the start point of a few inches.