World generating is broken
Linked issues
duplicates 1
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Comments 3
Just to help with possible reproduction of the issue, it would be good to have F3 enabled, too, while taking the screenshot; gives the coordinates to the location etc.
EDIT: the location was apparently right near the spawn spot. On my 1.4.7 it generated without issues, the green area shouldn't be there. And the screenshot definitely at least looks like MC-315.
Duplicate of MC-315, please use the search function to see if your bug has already been submitted. Currently over 51% of tickets are being closed as duplicate.