If you fly with elytra and land beneath a transparent that is 1 block in the air, a weird visual bug occurs. Your camera continues to be one block lower than it is supposed to be, as though you are flying, but your player model stands straight up, clipping through the carpet.

This does not affect ordinary midair non-transparent blocks, because the player is not allowed to fly under those.

Video: https://www.youtube.com/watch?v=RrhboAovQbU