Bug #1
Sometime's if you're flying around in survival, it will play the wind sound twice this makes for a really annoying sound
Bug #2
If you're running around in survival mode with elytra and jumping, sometimes you will be able to take off and jump off of the ground while flying without going back to stand mode
Bug #3
If you're standing next to a 1 block high gap, you are able to fly into it and crawl around
Bug #4
Hitting yourself with a punch bow, allows you to take damage for infanite flight im not sure if this is a bug, though