Tidal - Albums in AAC

Has anyone noticed that a number of classical albums on Tidal seem to be in AAC? Could be my imagination, but I don’t remember this before…

Not sure this is a roon issue, but thought I should raise it.

Regards
Gareth

Its not anything to do with Roon. Tidal has lots of AAC only albums.

Check that you have at least one Tidal track that is playing in FLAC or MQA to ensure there is nothing wrong in your setting or subscription. Add a new track from the top albums for testing if necessary.