yea i have compared it with minitweaker and played around with values. There is almost no difference, at least with nothing that could cause that bug.
Btw.. my old scene.dat was actualy based on someone elses 16km mod. ive just changed some colors for my own. I dont remember where ive it from its a while back now.
I assume there is just some texture flipped. It has happened to me when i was moding sky colors too. Ive accidently flipped the skytexture once by converting it to another format and the sun raised in the west

maybe this is just as simple...
edit: and the value in my scene.dat
DynamicOceanGridSize = 60
EarthRadius = 800000