Legomagi showed me himself floating in the air and i realised what he was doing. Then with this informating i was able to reproduce a invisible parkour course. The way you do this is by making scaffolding reach its limit where the end falls then u have a not full block under it so that the scaffolding breaks when it falls after a bit a "ghost" scaffolding can form that is interacted with like a normal block but only u can see it andstand on it creating what makes it seem like u are "hacking" or "flying".

i tried to post a picture but i kept saying i went over the 50k word limit :/

Hey Pickole,

Thanks for the report, this is actually a known mojang bug that they still have marked as unresolved.
https://bugs.mojang.com/browse/MC-148795