Hello,
in the process of porting an application to Babylon Lite and I figured out that `setMeshVisible` does not work in conjunction with `ShaderMaterial`, which also includes the newly added LineSystems, see the attached playground: The right box should not be visible since it is hidden by `setMeshVisible(mesh, false)`.
let me check!
ok it is a bug 
Preparing a quick PR!
Looking forward for it.
It was merged. It should be on master