If flying in creative mode, you can fly into a block and get your head stuck inside of it.

I cannot include an image, but the glitch is just if you are flying in creative, you can fly up into a block and your head will be inside of it. It doesn't get you really stuck, but it is annoying if you are flying from one side of a room to another. I found this glitch on the Xbox One, Bedrock edition of Minecraft.