ok, I was trying to level up my nincada from a battle with wild roselia. when I got out of the battle when I ran, walked, or basically did any mode of transportation, my top screen went glitchy! there were black notches on either side of the screen, and it happened every 4 steps I took! now, I dont cheat, and I know I have no hacked Pokemon. so, whats going on?
edit: ok, 2 of my Pokemon were poisoned, once they were cured this whole glitchy screen thing vanished. so, does anyone know what is going on?