If one Player is shaped as e.g. a horse, the other player should be able to ride him.

Works now, but the "as-horse-shaped-player" doesn't notice the change and is still able to hurt the "riding" player (screenshots).

As-Horse-Shaped-Player:

Riding-Player:

Other-Player:

I just found the startSeenBy and stopSeenBy methods on Entities... Maybe they'll fix this?

Finally I managed to fix the render bug!!!!!! (as of 0220a0e). It's still looks a bit glitchy but works fine! 🥳