Here??s another weird one:
In 1.5, atmospheres on objects that orbits inside other objects does not render. By making the object large enough to barely fit inside, i get some weird noise on the surrounding mesh, but no atmosphere.
This behaviour is evident with both the old and the new atmosphere definitions.
It might not be a problem commonly encountered, since atmospheres usually only are found on major solar system bodies - but i use the code often to create visual effects on or inside my models: this works in 1.4, but no longer...
-rthorvald