See the following list of issues recently confirmed by the dev team.

・ In some cases, swiping to the edge of the screen during a match causes either the directional buttons to disappear or the touch controls to stop functioning.
*If this issue occurs, remove your finger from the screen momentarily and touch the screen again to resolve the problem.

We are currently hard at work on fixes for all known issues.
Read the notice released along with each update to see which issues have been fixed.
We apologize for any inconvenience caused.