MPRemoteCommandCenter command called only once

I registered some handler for MPRemoteCommandCenter

    [[[MPRemoteCommandCenter sharedCommandCenter] playCommand] addTarget:self action:@selector(playFromRemote:)];
    [[[MPRemoteCommandCenter sharedCommandCenter] togglePlayPauseCommand] addTarget:self action:@selector(playFromRemote:)];
    [[[MPRemoteCommandCenter sharedCommandCenter] stopCommand] addTarget:self action:@selector(stopFromRemote:)];
    [[[MPRemoteCommandCenter sharedCommandCenter] pauseCommand] addTarget:self action:@selector(stopFromRemote:)];

Commands do nothing more than call an internal handler and return MPRemoteCommandHandlerStatusSuccess

- (MPRemoteCommandHandlerStatus)playFromRemote:(MPRemoteCommandEvent *)event {
    NSLog(@"Got remote command.");
    return MPRemoteCommandHandlerStatusSuccess;
}

The problem is that I get the "pauseCommand" when the user presses play/pause on the remote (and I stop the audio stream). Pressing again the remote play button don't send anything to the program.

In other words, I get only the "pause" command and not the play (or toggle playPause one), there is something I forgot to set in other places or it's a bug?

Similar code (ported directly from iOS) using the deprecated

            [[UIApplication sharedApplication] beginReceivingRemoteControlEvents];

have the same problem, I only get "pause", no "play"...

Any hint or suggestion is appreciated...