You’re spot on Pete. If I take the Blur Think Tank Album that Erwan posted in the What’s Spinning thread Roon lists the Tidal 16/44.1 version as being MQA encoded:
However when I play it back on my Audioquest Dragonfly (MQA renderer) Roon’s signal path shows that this is just straight 16/44.1 FLAC with no MQA-encoding.