Calling delegate from extern(C++) class crashes on Windows

[tim-dlang]

import std.stdio;

extern(C++) class A
{
    ~this(){}
    int i;
}

extern(C++) interface I
{
    void f();
}

extern(C++) class B : A, I
{
    void f()
    {
        writeln("B.f ", i);
    }
}

void main()
{
    scope obj = new B;
    obj.i = 42;
    obj.f(); // Prints 42 as expected
    auto dg = &obj.f;
    dg(); // Crashes on Windows
}

The above program works on Linux, but crashes on Windows while calling dg.