The C# compiler (SemanticModel) correctly returns a TypeParameter symbol for the U in <see cref="C{U}"/> in the below example. I can validate this in the syntax visualizer (see below screenshot) and this also works via API (for example if I get symbol for C{U} and inspect its symbol.TypeArguments.

For the corresponding case in VB, U does not bind (see below screenshot). If I get symbol for C(Of U) and inspect its symbol.TypeArguments, I get back a ErrorTypeSymbol.

Shouldn't the VB compiler be able to return a valid symbol in the above case (considering that the code didn't produce any errors)? Why do the two compilers behave differently here.