Can someone explain this

[Nextly]

 

[Fermiin]

I play Bedrock quite often and I've seen this a few times, but I don't know much about Bedrock. But I think it's a bug and the player has used that bug to get there. I hope I was able to help you.

 

[Katsia Stray]

Either he block glitched, or man just phased through the floor (hacks or no hacks)

Youd be surprised what high ping does for you