I recommended that @4651282 opens a thread in Support because their symptoms seemed somewhat different from the ones in the pinned thread with the known issue, namely:
and previously from a thread in Roon Software Discussion > Qobuz ;
Because of this I figured no favorite tracks at all.
However, in the opening post here, it looks now different again, as the favorites are apparently just not in My Qobuz, which is more in line with the known issue:
Nevertheless, starting 3 weeks ago looks different and might be of interest.