Static member of super class is available without qualification in inner classes?

It seems this can be simplified to

class A {
    static let superA = "a"
    
    func foo() {
        // Doesn't compile
        _ = superA
        // Compiles
        _ = A.superA
    }
    
    class Inner {
        func foo() {
            // Compiles
            _ = superA
        }
    }
}

I'm quite used to the non-compiling behaviour, as func foo works at instance-scope, and superA is defined at type scope, so that's not surprising.
I don't know if it's something that we want to revise (allowing instance scopes to access type scopes implicitly) as it might be confusing when shadowing is in place.

Though I don't understand why the instance scope of Inner should be able to access superA...