because if you work in cg you know what we are talking about
Ehmm... why is that?shadingEngines are sets that hold only faces. You can be very wrong if you only ask the shapes for shadingEngines..
face assignments will indeed break your shading groups in not all, but certain peculiar situations. its reproducable as well. When on a tight deadline and your scene is 1 gig of textured, shaded geometry, one does not simply toy with fate :)
can you pls line that out?If so then this is a bug of a VERY basic feature!In my experience: If you always assign to faces then the connections made will always be clean! If you assign a shader to the shape instead and then another one to ALL faces again. There will remain a connection to the first shadingGroup!!!