Actually moved away from Spotify because of this. And since other music services do not fare better and it's variable at best, I once again download EAC to screw the music industry back for not letting me enjoy music in a really high quality through easy, payed channels and means like Spotify, Tidal, etc.. Besides going to a concert (which I do a lot), I really don't have much options here to enjoy the content at it's full extent.
As already pointed out, UMG since then fixed the faulty technology but Spotify have repeatedly refused to redownload the corrupted music. I contacted Spotify directly, they told me they knew about it and they wouldn't do anything. It's been 5 years now and Spotify are still ignoring this.
Just to let you know I've been trialling a lot of alternative streaming services including Tidal, Deezer and Apple Music. I compared several releases on each service. The best I found for lacking the watermark was Qobuz, which also caters for the "audiophile" audience. If you're more into popular music, Apple Music seemed to have fewer instances of watermarking.
I did find watermarking on some recordings on all services and not necessarily on the same tracks!
I've been having this battle with UMG and Apple Music for quite a long time. I only listen to classical music, most of it solo piano and symphonies and I noticed it immediately on most DG, Decca, Philips (and other UMG sub-labels) records. I didn't know it was digital watermarking so I have exchanged a lot of emails with Apple Music, even sending them my own rip of Chopin's ballades with Krystian Zimmerman by DG where it's like night and day difference. Ultimately they acknowledged they hear the difference but can do nothing and never mentioned it was digital watermarking. I then discovered Matt Montag's post and everything came into its place. So, it's been a year since and what can I tell. Nothing's changed on Apple Music. So I decided to just ban UMG. I started researching other performers and labels and I have now completely swtiched to Sony Classical releases. They have recently remastered and re-released RCA Living Stereo recordings. I have deliberately removed all UMG releases from my library and I won't ever listen to any of them. If I have to, I will deliberately download a pirated copies form well known torrent sites. But I am not gonna pay for an abomination like that.
Ohh, BTW, there's a new streaming service dedicated only to classical music called IDAGIO. I've tried it and there are no watermarks on any of the DG releases and the premium service stream in lossless FLAC. I believe since they are a small team, they probably just rip the CD-s themselves which is why no watermarks.
I've tested it for a month, however I've had many problems. First of all, they do not support the notion of "album", so you can't simply listen to a well-known CD. You need to know a particular composer, work, performer and year of relase but since there are not CD-covers and many release years are acutally re-master or re-release years, it's very difficult to find what you llok for. Add to that bugs, high load on macOS, etc. But they promised changing their ideology about the albums, so maybe in a year or so they will get better.