Shadow Mewtwo has a problem in Pokken Tournament. He’s currently broken. Players are able to set up an infinite combo when playing him by doing a particular moveset against any blocking opponent. Once the moveset has been initiated, it can be turned into a loop that allows the player to continue attacking and becomes unstoppable. You can see a video of the glitch in action below.
It appears as though there is a patch in the works to fix this issue, as well as a few others, including adjustments to some of Reshiram’s damage and attacks. The update is slated to go live sometime in early April, finally patching out this glitch that can make you invincible even in online matches.