Multiple people on my realm, including me, have died whilst flying in the End using Elytra. This is despite being at a safe level above the "floor" of the End, say at 200.
You die in the same way you would if you fly too low or fall into the void.
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Comments 2
Thank you for your report!
We're actually already tracking this issue at MCPE-55671, so I resolved and linked this ticket 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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I have two people on my server reporting this same problem since we went to 1.15.2. Had good network connections, only 4 players on server at the time