I loaded up a new world for 1.4 and got a chopped looking mountain. I think it may be a terrain generation bug
Seed: 5237325308549975333
Linked issues
duplicates 2
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Comments 10
It looks like the level.dat file got corrupted (when this happens, the seed gets lost, and superfat maps turn into default)
Possibly related to MC-315?
I've been wondering why minecraft doesn't store the seed in a more secure location than the level.dat file.
This reminds me when I updated a Beta 1.7.3 world to Beta 1.8.1; some chunks have chopped mountains due to the new terrain generation code.
Duplicate of: MC-1091 - Linking to parent for reference.
Let me know if you need more pictures and the seed.