Comment 26 for bug 1491566

@pat the important thing to know in unity8 is whether it still prints entries like the following in the log when you touch the screen after it gets into this unresponsive state:

"""
qtmir.mir.input: Received MirTouchInputEvent((id=586,action=up,x=586.491,y=468.756))
qtmir.mir.input: Sending to Qt (id=586,state=released,normalPosition=(0.509107,0.244144))
"""