So other day while at work I noticed I was able to control the web player through my phone and vice versa also noticed the web player looked like it had gotten an update. Today web player looks like it's back to an older version and no longer can control web player via phone or spotify app via web player. Both phone and laptop are on same company network.
Spotify continously tries to disrupt our enjoyment of their service. When they are not removing features from the desktop client they amuse themselves with A/B testing things like the web player. Get used to it or change services as it will most certainly continue and you will never get any real answers as to why. 😕
With that said, I'm pretty sure the new UI is coming back for everybody full time eventually. I really want the spotify connect functionality too.