Hey @Yoco !
Unfortunately this is intended as it is by design. In fact, the water material is using 2 render targets (one for reflections and one for refactions). In that case, water can’t really be rendered on a sphere as it’ll require 360° reflections (typically using reflection probes). Basically, this water material should be used only to render water on planes
I’m planning to redo the water material for the version 5.0.0 of Babylon.JS and it would be cool if it can use reflection probes in case the water is applied on something that require 360° reflections.