So I have water in my level and I can see it when working, but the moment I try to “play in game” it disappears. I have no clue why this is happening. Any suggestions are welcome, thank you.
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Bump.
I’m having the same problem right now, with “Hidden in Game” disabled of course.
In my case, I suspect it’s due to my level-streaming with one Persistent Level and 2 Sublevels (MainMenu and Game), which I implemented after I already built my Levels. So now I have some duplicate actors in my world like Atmosphere and Water.
But the Water Mesh in the MainMenu Level is invisible even in Editor.
Could it be, that the Level Streaming loads only the first Water Body with it’s Mesh (MainMenu) and doesn’t update on the next Level streamed?
I’m truly clueless 
did you ever manage to fix this ?
Another dead-end threat on this forum. shocking.
One thing to verify, is your level streaming bounds volume completely covering the level/water volume?
UE5.4 Partition World.
water body river will affect landscape.
After playing mode , Landscape will be streamed as low res firtst then slowly to high res.
Problem: River water body will stay Low res as the image shown.
Disable WORLD STREAMING will solve this problem.
I think your problem is the same as world streaming …
