MPRIS: Artitst name not shown on first play

[thequantumcog]

I use spotify for my music. When you start the spotify app and play the first song, the artist name is not showed. If you play another song or play the same song again artist name is shown.

"mpris": {
		"player": "spotify",
		"title-len": 50,
		"justify": "center",
		"tooltip": false,
		"format": "<span foreground='#46c880'></span> {artist} - {title}" 
	}