I shut down my Wii U while it was in the middle of closing SM3DW, and a weird corrupted-looking effect appeared on the Wii U gamepad just before it shut off.
Could this potentially lead to an exploit, or is this nothing?
My Wii U is on whatever latest firmware was on New Super Mario Bros U, Super Mario 3D World, Mario Kart 8 or Donkey Kong Country Tropical Freeze (never been connected to internet).