jumping in a 2 block tall space lets you clip your head through the block on top (without elytra)

a few months ago on another account, I made a bug report of how when you jump in a two-block space if you got elytra on. well now, it works without an elytra (as far as I know only in creative mode) I also have a video link so please this bug (sorry for the bad quality its because of how I had to compress the video when uploading cuz the max file size is 10 MB)