Sometimes when hitting walls while flying with Elytra the player model will bug for some seconds into the wall

It happens in corners and in walls largest than 4 blocks, as you can see from screenshots and the fall will be slow like you are flying

1. Find (or build) a corner at least 10 blocks tall or a wall at least 10 block tall and 5 long
2. Go to a proper height
3. Set your gamemode to survival mode (also in creative but in surv you can see better the fact that after you hit the wall and take damage, you will continue to be bugged into it and you go down very slow like you are flying)
4. Press f5 only one time
5. Fall down and fly with Elytra on the corner or on the wall builded before