Artist "Zen Bamboo" split in three

Hi Roon and everyone,

When I search for the band Zen Bamboo in Roon, it shows three results for the same band :

One instance contains their main album, another instance contains two ep’s and a few singles and the last one contains two other ep’s. Some albums show the mention “all tracks performed by Zen Bamboo”. If I search for them in the Tidal app, everything is grouped together, as expected.

I know I can merge those multiple instances together, but souldn’t it be all grouped together in the first place?

Thanks in advance!