Issue

When playing in Creative mode, sometimes I can't exit flying by double tapping the jump button if I'm directly touching a solid block above me, and I have to move away from the block until there's air above me or destroy the block to exit flying. Sometimes it happens all the time and sometimes it doesn't. It seems to stop after closing and reopening the world you're playing on and then after a while it starts happening again.

Reproduction

You can reproduce this by:

1. Going into Creative mode
2. Enter flying
3. Fly up into a solid block above you (place one if you need to)
4. Try to exit flying, sometimes it won't let you unless there's air above you.