I'm using tesannwyn, but independently on how big -h parameter is I don't get water in my world. I tried with an -h 22000 and with -h 51000 but always uselessly. despite this in oscape when I'm at preview window changing sealevel, the water actually changes its level, but in game I have the map showing sea correctly while running around the world there isn't even one drop of water.
How to solve this?