Music player in widget

I use 2 music apps, Spotify and Pulsar. Both working fine with kwgt. But when I stop playing music with Pulsar, the widget autimatically turns back to Spotify. I want it to stay at Pulsar. In settings the prefered music player is on Automatic. Can anyone help me.

The next version will do a better job in doing this, when 3.30 will be out you will have to select Pulsar as the default music player, Kustom will then pick Pulsar if no other player is playing