As the title,can someone please give a definitive answer if this is supposed to work or not

I have an android phone connected to my car stereo via bluetooth vw discover media

I see song info,track title etc etc and everything works fine except no album artwork

Ive have searched on here and several vw and other car forums and cannot get a definitive answer.Some people claim it works,others say it doesnt,some say its because android limitations,others say its because bluetooth doesnt transmit artwork,others say they use other apps from their phones and it works and blame the spotify app but there is no final answer to this that i can find

So......anyone from spotify that can answer this once and for all,should the app show artwork on the car screen or not.If not,what is the reason?

If not,same question with connecting via a cable to the car unit?(dont want to buy one if its a waste of time)Again a million different answers from people without any definite conclusion

Thanks