Hi @Andrew
An update on this issue. Interestingly, the Qobuz iOS and Android apps showed the same issue until last week. This is a screenshot from an iPad 2018 running iOS 12 I took a few days ago:
The issue has now been resolved by Qobuz and the tablet apps now show the groupings correctly. When I made them aware of this issue, I mentioned that most Qobuz partners (with the exception of Roon) do not reflect the groupings correctly. I suggested to Qobuz that they contact their partners and make sure the data flows through the API correctly.
Maybe it would help if you reached out to Qobuz as well, please. They are obviously aware of the issue, as it was only just resolved in their tablet apps.