Mixed C++/QML and QML only debugging on Harmattan fails to hit breakpoints

Steps to reproduce:

• create a simple QtQuick Application
• attach Harmattan device and configure it
• enable QML debugging (with/without C++ debugging)
• set breakpoints and start debugging

Expected result:

• breakpoints are hit nevertheless where they're located

Current result:

• breakpoints inside C++ files are hit
• breakpoints inside Qml files seem to be ignored