Yes one of my dogs stepped on my Nuimo remote while I was in work yesterday.
The music stopped in the office, my wife messaged me to turn it off in the house and the dog was not good enough to do me the favor.
Eventually the wife pressed the pause and I could start the music in the office again.
This is by design as you are only allowed one stream (besides from Roon or Sonos etc in multi room setups)
Just stop one if them playing and then the problem goes away. It’s not a Roon issue as it’s telling you that Tidal stopped because it is playing elsewhere.
There were a lot of issues with account talk overs a while ago and that was an impact.
I have exactly the same problem although I’m even more frustrated as I paid for a Tidal family account thinking that would overcome it but it hasn’t.
Tried to set up a new user to use for Roon but of course favourites etc start from scratch so not an option…
I have the same issue with Spotify (which my family often plays at home via Sonos, and I often listen to in my car because it’s well integrated). I’ve tried to sort out the accounts, but someone always has to be the one that Alexa plays on Sonos, and then that person gets annoyed.
Spotify has the advantage that the app can “grab control” but then the family gets into Spotify wars trying to grab control back and forth. It’s actually kind of fun.