I just found a glitch with Shang Tsung. In his Crane stance, press back+2, then press it again as the opponent is falling, then again while they're down. If you time the last hit right, and don't hit the opponent against a barrier, when the opponent lands the character model will appear very unusual; it will appear as simple polygonal shapes, or in some cases, will be invisible but for a shadow and certain pieces of clothing. This may work with other moves but back+2 in Crane is what I found the glitch with.