I have the same problem when I do local flight. The ground give me the instruction to hold short runway XX (the runway assigned me for take off, not for crossing), I stopped before the runway entry line and wait. There's not hand-over to tower instruction at that time, which in previous version will be given even before I reach the hold short point. And it said turn to the ground frequency when I turn to the tower frequency without the hand-over instruction. However, I still can talk to the tower that I'm ready for take off and he will let me take off.