A year has passed since I originally posted this question:
Recently, I tried editing My Sonos to remove the Tidal Playlists section. My plan was to re-add then check if the above issue had been fixed.
However, I find no way to do this. “Edit My Sonos” has options to rearrange and delete “Long press to rearrange the content. Tap the delete icon to remove”.
How to add my Tidal Playlists section back into My Sonos?