I noticed this when I joined a survival world with my friend, CHOURRIOUS and there were large holes spread apart and when I told him, he said he didn't see them. He could collide and I would fall into the void. Then I joined another friends world and this time CHOURRIOUS could see them like I could except for the host.
So the host can't see these holes, but we can and if I try to walk further, I fall though the ground into the void.
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Thank you for your report!
We're tracking this issue under MCPE-58514 so I've requested this report be resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
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