All I can say is that its a he said she said moment. If you really want to find out who's fault it is at the end of the day you'll find its in fact Google's fault as in L 5.1.1 they stopped support for Miracast in favour of their own Chromecast and they've hidden miracast by default.
There is a fix being worked on and testing at present, that is the last info we had.
There is a fix being worked on and testing at present, that is the last info we had.