Trying to replace air with lava in river generation (can’t use any other feature because of CustomHeight)

I believe this is the same issue: http://dev.bukkit.org/bukkit-plugins/terrain-control/forum/70663-generation-issue-with-terrain-control-replacing-of/#p8

Tested on the newest dev build. :(

I added some debug statements. The populate method of org.bukkit.generator.BlockPopulator is not called; the whole chunk is not populated at all, TC's populate code is not called at all. This must be a bug in CraftBukkit. The blocks not being replaced is just one symptom.

This bug is actually very old, it's already investigated by @Mysteryem over here. As this is a duplicate of #151 (which is still open and has exactly the same cause), I'm closing this report.