as the title suggests whenever I fly quickly using elytra (rather by using a trident w/ Riptide, fireworks or simply falling w/ the elytra still activated) while looking straight up it will kick me out of the world with the message:
-------------------------------------------------
Connection Lost
Invalid move player packet received
-------------------------------------------------
and the only option is 'Back to server List' (as shown in the attached screenshot.)

How to reproduce:
1. put on elytra.
2. get a firework rocket or Trident w/ Riptide.
3. activate elytra.
4. look straight up and Do nothing and let yourself fall or use trident or firework.