When using the functor style connect for a connection to a signal that is in a library and defined via way of an interface then it will fail to connect at runtime

When using the functor style connect for a connection to a signal that is in a library and defined via way of an interface then it will fail to connect at runtime. It compiles fine and also runs fine on other platforms, it is just on Windows where it will fail to connect. The old style connect will work fine.