Currently unable to debug on a tablet as soon as as 'sensors' and 'multimedia' modules are added to the project. The application doesn't even launch after hitting the debug button.

I am able to reproduce this issue using the openglunderqml example application. Edit the openglunderqml.pro and change this line:

QT += qml quick

into this:

QT += qml quick sensors multimedia

That is all that is needed to reproduce the issue. Rebuild and launch in debug. The application will not launch, and all you are going to see in the Application Output is the following:

Debugging starts
Debugging has finished

If you revert the line change and rebuild and relaunch in debug, you will be able to launch in debug. the sample application will run, and your breakpoint will be hit.