single object multi/sub-obect absorpiton (refraction) problem

[v.p.vlasenko]

Hi,
looks like it's a very old problem but I thought it was fixed?

"liquid" inside "glass" works fine if it's 2 separate objects, but as soon as I attach them into a single - I'm getting result as on the screenshot.

Same materials, left side is separate objects, right side single object.
Top 4 - "liquid" without absorption
Bottom 4 - "glass" without absorption

[maru]

This is currently expected because of the way Corona handles overlapping volumes. We understand that this is unwanted from user point of view and it is logged as a bug. Hopefully we can improve it in V12 (but not promises at this point, sorry).

(Internal ID=931148859)