What are you guys doing to Mirror a room?   I know others are running into this, say on a typical and similar kitchens, exam rooms, etc.  I notice that there is no mirror room, only mirror product.  once and a while I use it and it works right, other times the results are funky.  But, that could have been old versions.   I just tried it in the latest beta and it failed.  

I'm not sure if it only worked on 2D drawings?