Qt3D on Harmattan: some examples are not properly installed

After installing the Qt3D TP2 package to the Harmattan device, the following applications are not properly working:

shaders, lunar_lander, matrix, monkeygod, moon, photoroom, sphere, teaservice_qml, modelviewer

It seems that these applications are either not installed to /usr/bin directory, or wrongly referenced in their desktop file.