This is a limitation in the metadata that we get from Qobuz. We request a track listing for an album and Qobuz returns the list along with the associated track metadata. The issue here is that they are not providing track-level metadata that includes the work title along with the movement title. Their apps are pulling additional non-track items which show as the work name and disc number. Unfortunately, we don’t have access to this information.
Classical is one of those areas where typical tagging falls down and the generally accepted method is to include work names with the track names. In your example it would be much better for them to provide the following metadata with the tracks:
1 Piano Sonata No. 7 in E Flat: Allegro moderato
What you’re seeing in their interface appears to stem from their efforts to make their apps more Roon-like in the way that metadata is presented. Unfortunately, there’s no standard for that type of interface.