I setup a a scene with a viewport (containing just a label node) and a mesh plane.
The plane's material is set as billboard, and the billboard texture is taken from the viewport.
I made the material local to scene, because i need to instance the scene many times, and i need to read the content of the label text in the billboard (which is different for each scene).
For each instanced scene, the debugger shows me this error:
getnode: Node not found: Viewport
setuplocaltoscene: ViewportTexture: Path to node is invalid
It looks like it is not being able to find the viewport node, except it is, as i can see the correct label text being displayed in the billboard.
I wouldnt care too much, but this thing is flooding my debugger and i cannot see any additional errors.