Not sure what caused this but I have apparently found a death glitch in one of the areas in Artaria. I took a video and posted it to twitter. This is the area you use the 2nd pseudowave early game to skip the emmi door cutscene. Here's the link: https://twitter.com/Joe__Almighty/status/1459015478039375874?t=_I_0qXphG8kYLOUrxGWUzA&s=19

Any thoughts on what may have caused this?

Current upgrade progress is below:
Gravity suit
Plasma beam
Ice missiles
Bombs
Speed booster
Flash shift

Cause by pseudo waves skip, water down left don't fall and freeze. So this space becomes out of bounds.

That's very interesting, I honestly never knew that. Thanks!