Yet another user having the exact same problem. Archlinux, latest. Was running through pulseaudio channeled into jack2, but even direct to my focusrite, no love. Exact same symptoms. Clearly a spotify issue, as I have been in Windows for about a week playing a game I just rented (a UWP-based game, so no, Proton wasn't gonna cut it), and Spotify worked just fine when I shut down and booted to Windows. Nothing was updated or changed in that time on my end or OS.
I pay for premium, so even though the linux port is 'unsupported' and a 'labor of love', (I totally don't mean this to sound like a "threat" to dump my subscription over this, but just being honest), but I know of a free method to do pretty much everything spotify does (actually technically better, because no DRM and I get to keep my downloaded tracks), but I'm paying for convenience and not having to store/stream my own library. Can't justify paying when the convenience factor doesn't apply anymore... So please fix it, because I actually like Spotify and am more than happy to keep paying for it, so long as it actually works.. Which it currently does not.
So they "don't officially support linux".. But clearly there's an issue.. Not asking for support, asking for a working product. I guess if this is the attitude they're going to take, alright, I guess "I no longer support Spotify" is going to have to be my response. Again, I LIKE SPOTIFY and want to continue being a subscriber, but if that's the response they're giving to a valid issue, I can't continue to pay for convenience when that convenience doesn't actually exist anymore, and they don't care about fixing it. This isn't a feature request, it's basic functionality that most people here are paying for.
Not asking for much, just release a working product people pay for, and don't blow off paying customers. Seriously. What a terrible response. So much for a 'labor of love'.
If my response comes off as terse, well, it is. I can say it's because I'm paying for a service and not getting what I want, but really, that response above was ridiculous. This isn't asking for support, this is making them aware of and asking them to fix a problem... Only to be brushed off. That right there annoys me more than the fact that the player isn't working right. The response above has prompted me to fix my 'play' database and reimport my playlists there. I'm pretty certain I'm just done with spotify for now. Sorry.