New Iphone App for Spotify missing stereo detail via bluetooth!

[Leftee]

I was forced to upgrade recently to the new version of Spotify for my Iphone. I immediately noticed on some songs the guitar stereo track has disappeared on certain tracks. I had listened to these tracks on the previous version and all the guitars could be heard. On the new version I am noticing missing stereo fields on certain tracks and songs via bluetooth, however plays fine on any desktop computer. Running 3.4.0.684. Anyone else having this problem or know a fix? 

[Leftee]

Here is a song of note where the lead guitar is missing on the app from Iphone via bluetooth, yet plays fine on any desktop computer. Very strange! https://open.spotify.com/track/6UAtUi0bcTadFvfIJQyfj9