Hi McJty -

I'm using the exact same profile for two versions: in 1.12, the offset is functioning as expected, but in 1.11.2 in two different server worlds, the water level remains at y63.

cfg file

Hmm, I'll check it out but normally you're supposed to set the waterlevel with this:

I:waterLevelOffset=-8

I don't understand why it works on 1.12 like you do

I'm not sure I understand your response, but I purposefully set the waterlevel to -8 to get a slightly flooded/drowned effect.

Ah hmm ok
Well I'll check it out but as I tested this on 1.11.2 I'm not sure why it wouldn't work

Naturally. :)

I'm going to generate from the same seed on both and compare.

Is there a way that server generation could produce slightly different effects? I'm concerned about this given my inability to generate a chisel world on my server.

OK - i took the seed from the "flooded" world generated in 1.12 single player and ran it on my 1.11.2 server. It generated the same biomes, but with no flooding. Water level was normal.

I'm wondering if slow server generation is causing this parameter to somehow "miss" when spinning up the world?

Seed was:
3430650241471016720

Apologies but maybe this should be merged with the previously opened bug regarding server generation and worldtype.

Using the same 1.11.2 instance and after verifying the cfgs matched exactly, i compared the server-generated world to the SP generated world and the SP world was flooded (and possibly different in other ways as well). Given the only thing that could be different is something misfiring in selecting profile ("udk") and the matching parameters, I think this is not a 1.11 vs. 1.12 issue, but server vs. sp.