Unexpected result when checking if generic type implements its generic type definition

[LaXiS96]

Hello,
please have a look at this fiddle: https://dotnetfiddle.net/NlY70e

Dictionary<string, object?> is the concrete type.
IDictionary<string, object?> is the closed generic type.
IDictionary<,> is the open generic type (generic type definition).

Checking if the concrete type implements either the closed or open generic types returns True as expected.
But checking if the closed generic type implements its open generic type returns False, which is not correct in my opinion. I would have expected it to return True since the closed generic type is essentially an "implementation" of its generic type definition.

Can anyone comment on this?
Thanks

[LaXiS96]

Updated fiddle with workaround: https://dotnetfiddle.net/NED18q

I am using IsConstructedGenericType and GetGenericTypeDefinition() to check the open generic type, while also keeping Implements() for all other cases.