Some already mentioned this, just wanted to confirm that the problem
persists even in 219:
I have several projects, most C#, a few VB. References to VB namespaces
are labelled red (cannot resolve symbol). When formatting the code with
R#, the red namespaces are stripped from the file (arg!). So for now I
have to leave "Optimize usings" unchecked and have to ignore the
warnings and popup from R#.
Could you just analyse the output dlls instead of the referenced project
when the project language is not c#?