MC-88371 appears to be a similar issue, but how the dragon descends does not seem to be the same.
The bug
When all the bedrock at 0,y,0 is removed in the end, the ender dragon will slowly move vertically with a fixed x/z coordinate when it attempts a perch.
Steps to reproduce
Remove all the bedrock from the end exit portal at the
0,y,0column.Wait for the dragon (natural or summoned) to attempt a perch.
Observed results
When the dragon begins an attempt to perch, it will flap its wings rapidly at the same x/z coordinates while lowering or raising itself at a constant velocity. Naturally-spawned/crystal-spawned dragons tend to move downwards, and can ignore the y~40 solid ground, while dragons spawned with /summon tend to move upwards (though one was observed to go downwards as well).
Expected results
The dragon proceeds to perch above the exit portal as if the bedrock were still there, OR the dragon does not attempt to perch at all.
Comments 4
When attempting to perch the dragon aims for the highest block at X = 0, Z = 0. This is the same in Java (MC-207174) and can easily be verified by spawning the dragon in a different dimension. Since this mechanic is clearly designed for vanilla survival gameplay in which bedrock is meant to be unbreakable, could you clarify the gameplay impact you see here?
Cleaning up old tickets: This ticket had been set to 'Awaiting Response', but has not received a response from the reporter (~3 months+) so is being closed as Incomplete. If you feel this is still a valid issue then please comment, or create a new ticket following the Issue Guidelines which includes steps to reproduce the problem.
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Cleaning up old tickets: This ticket had been set to 'Awaiting Response', but has not received a response from the reporter (~3 months+) so is being closed as Incomplete. If you feel this is still a valid issue then please comment, or create a new ticket following the Issue Guidelines which includes steps to reproduce the problem.
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(y~ -40 solid void ground)