Hi Tom,
Attached is a scene.
Some more info, with RC I meant the final release, but we've tested it on Hotfix 1 now as well. The problem still persists.
If you have just the floor in the scene, it renders a certain way with a certain distribution of textures.
Then if we create a simple cube, the entire distribution on the cloner changes even though the cube is not part of the cloner.
We also tried putting the floor at the top of the hierarchy and the cube below it, no difference, distribution still changes in all cases except when you put the cloner on instance instead of render instance, then the distribution remains the same. (found that one in the link Aler posted).
That being said, this workaround is only useful if your scene has 1 cloner, as soon as you have more cloners this trick doesn't work anymore.
Hope this helps, please keep me posted.
Cheers,