The maximum height for building is 256 blocks. You cannot use commands or place blocks above this height, but if you try to create a superflat world in a way that would place blocks to high the game will crash.
Linked issues
duplicates 1
Comments 1
MC-139410
Game crashes when creating illegal superflat preset
Resolved
Duplicate
0
Asadefa
(Unassigned)
Unconfirmed
Minecraft 1.13.2, Minecraft 18w45a, Minecraft 18w46a
Retrieved
Thank you for your report!
However, this issue is a Duplicate of MC-68124.
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