This is a bug I noticed a few minutes prior to creating this report: Elytras don't work properly. Normally, when using an elytra, regardless of gamemode, I'm able to start flying, and use rockets to make it rocket powered. The rocket-powered part still works, but not the flying part, which is really weird. In Creative mode, I try to activate my elytra, and use the rocket, but I don't fly, I fall like one normally does in Creative, and Survival mode is similar, but I'm not sure about the taking damage part. This is an annoying bug and it was not around in the previous snapshot, so please get it fixed!