This is a mechanic where you can gain height with your elytra if you time a jump and change your angle correctly as you land. It feels really natural and honestly makes the elytra a lot more fun to play with, but only seems to work on multiplayer, not singleplayer, so I feel like it's some sort of server velocity / lag thing?
also yes this is a random video i wanted to show someone in the youtube comments and i don't care enough to unlist it
![](https://s2.save4k.ru/pic/PUQf8Yj2iCQ/maxresdefault.jpg)