Even with dual 1v1 OFF (or, toggling friendly fire) I still can't attack the CPU in training mode.
This is important! Isn't sitting in training mode to practice your tech the whole point of this
I realize u can sit in a normal match with infinite time and practice against P2, but I kinda need the training mode features like the 1/4 1/2 2/3 speeds. Practicing the tougher stuff at slow speed has done wonders for me.
edit: Sidenote- why does Fourside get blanked out when you press Y? It has an orange border like the other "legal" new stages, but it's the only one that gets blanked. IMO it's one of the better new stages.