ECMA 335 GenericsParam table and nested Types

[AnakinRaW]

Hey guys,
I wasn't sure where the right place it ask is. But let me explain first...

I'm working on some low-level stuff where I need to work with IL and the ECMA-335 specification. While looking at generics I noticed something that got my interest and I'm not sure if I'm misunderstanding the spec, missing some part or the spec is wrong or the current implementation is wrong (but i suppose it's the former two cases 😉)

I'm considering the following (C# )Code:

internal class GenericClassWithNestedGeneric<T>
{
    internal class InnerGenericClass<TV>
    {
    }

    internal class InnerGenericClassHiding<TV, T>
    {
    }
}

Note that InnerGenericClassHiding´2 re-used T from GenericClassWithNestedGeneric´2. Roslyn correctly informs me about the situation, however I can compile this just fine. According to I.10.7.1 p.65 this is correct, resulting in this IL signature
InnerGenericClassHiding`2<T, TV, T>. The section also states that there is no "name inheritance" but "position inheritance" .

Investigating this code on a binary level I noticed that the GenericParam (0x2a) metadata table has 3 entries for InnerGenericClassHiding´2 (as expected) however II.22.20 p.229 states the following:

There shall be no duplicate rows based upon Owner+Name [ERROR] [Rationale:
Otherwise, code using Reflection cannot disambiguate the different generic
parameters. end rationale]

According to this, if I'm not mistaken, my class should not be legals as we have a duplicate for Owner and Name. I confirmed this is a real duplicates with Mono.Cecil, ILSpy, and System.Reflection.Metadata.

I hope somebody can illuminate me on the matter
Cheers!