Gamemode 1 Floating Noclip

When in a creative world and flying, if you quit to title right after you stop flying or while flying but still moving, then when you reopen the world your player floats downward slowly and noclips through the ground. The player will keep floating downward until you start flying or reach the bottom of the world. If you fly, everything will seem normal until you stop flying, and then you start floating down again. The Minecraft world that this happened in is attached.