In both snapshots 14w17a and 14w18a, the courses of rivers change compared to the snapshot before. In the 14w17a Snapshot, the customized world type was added, but no changes to the standard world generation were intended (as far as the Wiki tells). The "fix" of this bug (https://bugs.mojang.com/browse/MC-53616) in 14w18a didn't return the river generation to the pre-14w17a state, so this bug isn't completely done, I think.
Linked issues
Attachments
Comments 8
Nothing changed in that world but the caves in deserts and Mesa biomes and the course of rivers. Only the caves were intended, so this is a bug.
Changed the description of the bug. It's related to the addition of the customized world type.
I want to hear a third opinion whether this is intended or not.
Reopened due to MC-53616.
Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases. If this has been done, we can reopen the issue.
Keep in mind that the "Resolved"-Status on this ticket just means "Answered", and that we are waiting for further information on whether this issue still exists or not. We will reopen it as soon as the requested information has been delivered.
Changes to the game can make the map generate differently, intended.