I have seen that before. I'm not sure why it's there. The developers probably put the menu there, and that might just be exactly what you see when you beat a level. The menu could be the level itself seen from that perspective, but I'm not entirely sure. Now that I think about it, we might be able to click on it and use it, and that could potentially cause some glitches, but I've never tried that.
I knew about that weird state but never found a way to use it in an actual run. Trying different things is a great way to make progress in speedrunning, so it'd be great if anyone could test completing it for the first time or find another way to make the game register a record time.
I'm fine with dividing the categories and I wonder if you can glitch on other objects such as moving balls, for example.