Been watching different demos on youtube and noticed that some of them are glitching.
Sometimes Corviknight's giant Pokéball doesn't appear when it's Dynamaxing.
Sometimes all Pokémon clip through the giant Pokéball slightly before it opens.
Sometimes Drednaw's model seems to be lower when it fully Dynamaxes, resulting in its lower jaw clipping through the floor.

This isn't consistent, however, as some videos don't show this problem.