I found this glitch while playing on console you can do the glitch by jumping and pressing pause and then pause again. Doing this quickly can make you jump mid air I'm pretty sure it works with every character I don't know if it works on pc. https://m.youtube.com/watch?v=1N3yeTpbEL8

Tested this on pc it also works with all characters

Yeah it's a known thing and it's called a storage jump. When you die or finish a level, your character's position is kept in the game's memory. When you start next level, you start with that same position for one frame. For example : if you were touching a wall when dying, you'll restart the level in a walljump position. If you don't touch anything when dying/touching bandage girl, it won't work.

Nice you found that by yourself