Video is too big for attachment: https://youtu.be/pc-eeYcfkD0
(See video)
Multiplayer - Windows 10 Edition - If you jump agasin a wall with a hole in, you can go thru that wall and enter some sort of "glitch-mode" so you can go thru other blocks above you!
Attached video is at really low quality (Recommended to see YouTube Video)
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Thank you for your report!
However, this issue has been closed as a Duplicate of MCPE-19110.
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