QML signal to C++ slot connection nonfunctional if declared within the C++ object with the slot

If a signal from QML is connected to a slot in C++ within the C++ object that has the slot, the connection does not function.

See the attached project.

The initial state of the project makes the connection outside of the C++ object and the signal is received properly.

If the connection in main.cpp is commented out and the connection in MyWidget.cpp is commented back in, the connection no longer functions.