So when you finish killing all of the green blobs, something like a new wave starts, and your character is warped back to the center of the stage and new stuff spawns in
However, when this happened, there was a box covering the point where I was warped to, so my little penguin guy appeared halfway stuck inside one of the boxes... And, upon continuing to move, I guess the character is programmed to move a set distance based on your starting position? Because when moving afterward, rather than my position correcting itself, I continued to move on an "offset" grid so to speak, and was always at a halfway position when moving up and down between tiles
I found out that you can actually fix this positioning error by walking into the outer wall though lol