Blocks are transparent. When we try to jump and there is a block exactly above us we dont colide instead we go into take damage and come back again. The picture i uploaded contains iron block above my head.
My device : yu phoria
Update by @unknown:
It's possible to walk into solid blocks sometimes after flying with Elytra equipped.
Steps to Reproduce:
From a height, fly down with elytra into a body of water
Walk into a 1 high gap
Notice your head can clip into a solid block
If you do this in survival you will take suffocation damage
Video demonstration: https://youtu.be/I2Oq8aWxwzU
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However, this issue has been closed as a Duplicate of MCPE-19110.
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