When you die on another floor than 1, parts of the level are missing when you respawn.
Before (theres a blue wall on floor 2)
When you get killed on floor 2 and respawn on level 1, parts of the level (floor 2) are missing.
You can test it for yourself:
https://drive.google.com/file/d/1dda8YJdBsFDDxB4rz0BZsyhdQ90Q1KHv/view?usp=shari...