Loosing ability to play or skip next track after a short while.

[NGRhodes]

I am finding that after a few tracks in a playlist or album the app will stop playing any further tracks or allow me to skip forward (or back).
I can still play the same song again.
This in particular happens after the application is left in the background (window closed), but also happens with the window open too.
If I click on a different track to play, the name gets updated in the bottom bar, but still only allows the previous song the app is stuck on to play.
Happens with both the latest (v5.30.220-2) flatpak and deb, I am using Mint 20.03, fully updated.
Issue is repeatable on a clean install of the same version of Mint on a separate machine.
Let me know if you need further info :)