Comment 30 for bug 627195

The MPRIS Raise method of the MediaPlayer2 interface does not require a timestamp parameter and this leads to focus issues in recent linux window managers (such as compiz, mutter or xfce) that need the event timestamp that triggered the call in order to correctly focus and raise a window. Otherwise the focus stealing prevention of the window managers would avoid a media player to be fully raised.

See for example this Ubuntu bug:

So, we should deprecate this method and provide another - say - RaiseWithTimestamp method that players should use to correctly raise their windows.