Streamed albums unexpectedly re-added to library in Roon (ref#8TLTG1) [Ticket in]

You mean Qobuz albums that were already in your library appear with new „date added“? This has been a known issue for a while and it’s under investigation. There are already a few threads about it.

See:

https://community.roonlabs.com/t/albums-sorted-by-added-date-incorrect-for-tidal-and-qobuz-ref-ds7n1o/314946/4?u=suedkiez