Bug or not, it's good to be aware of the problem.  I think especially for newbies who might think that they are doing something wrong, and not realizing that it's a limitation of the programs and not their fault.

Heck ... it took me freekin forever before I realized that the Ambient value set by default in Bryce was waaaaaay too high.  My scenes fairly glowed with ambient before I understood that you've got to turn it down on your own.

Could be worse, could be raining.