So I have a scene where two separate smoke domains are being used, one partially inside the other (i.e. the two domain cubes are overlapping). I’ve baked the smoke independently for each domain and all looks well in the 3D view. However, when I render only one of the domains/smoke shows up. This only happens when the domains are overlapping each other - when they are not in contact everything works fine (but they need to be touching for this scene).
Using a single domain isn’t an option and neither is rendering out the two domains separately then combining it back together (as the emitter particles and smoke from one go through the smoke of the other)
So is this a limitation of Blender, a bug, or something I’m doing wrong? (added screenshot in next post)
I had similar problem, never solved this… If you dont need the smokes to mix or rotate camera around them, you should try to put each domain into different layer and combine them using nodes. It’s really stupid, but better then nothing.