KingMassen Just tested these commands with BI mod and everything still works fine even using just a test build.
What does your script look like? Mine is very basic...
:state=0:state=1
:state=1:water=1,waterflow=30,watercurrent=180,waterfogdist=550,waterheight=450,waterblue=120,watergreen=150,waterred=10,waterspeed=70,state=2
I used one I already had done. I made a simple trench one segment wide and only about 4-5 long. Threw in some barrels and they flowed to the other end

I had player go underwater and he would also be pulled to one end. I don't see anything wrong.
best
My games never have bugs. They just develop random features..
Lots and lots of random features...