Biomes are sometime strangely cut, with straight separations as you can see on the pictures attached.
MC-14641
Strange terrain generation in 13w17a
Resolved
Duplicate
0
Paul-Bernard Bonneau
(Unassigned)
Unconfirmed
terrain, world-generation
Snapshot 13w17a
Retrieved
45th Duplicate of MC-315, please use the search function to see if your bug has already been submitted. Currently over 55% of tickets are being closed as duplicate.