Why does the landscape move in world composition? And problem with water

I have World Composition enabled.

When I load the project I go to the levels tab. With the World Comp window opened I can see the landscapes right where they should be but as soon as I go to load that level/landscape it suddenly is snapped/moved. The main editing window also shows that it moved away from its neighboring levels/landscapes. I move them back and lock them into place and save but if I reload the project they are moved again. Most of them stay.

How does the water plugin work on landscapestreamingproxy? I have that level/landscape selected but i get

“The actor will be placed outside the bounds of the current level. Continue?”