Hi @Luca_Gazzo,
I have enabled diagnostics mode for your account and it looks like these are the offending tracks (from Qobuz):
04/11 23:59:42 Trace: [music/retagextract] extracting tags for LibraryTrack[8984882, David Linx - Heartland (feat. Palle Danielsson, Jon Christensen, Igor Semenoff, Cécile Broché, Dominica Eyckmans, Jean - Paul Dessy) - The Way Forward IsAvailable=True IsDeleted=False ] 202:0:59787242
04/11 23:59:42 Trace: [music/retagextract] extracting tags for LibraryTrack[8985138, David Linx - Heartland (feat. Palle Danielsson, Jon Christensen, Igor Semenoff, Cécile Broché, Dominica Eyckmans, Jean - Paul Dessy) - Here Be Changes Made IsAvailable=True IsDeleted=False ] 202:0:59787243
04/11 23:59:42 Trace: [music/retagextract] extracting tags for LibraryTrack[8985394, David Linx - Heartland (feat. Palle Danielsson, Jon Christensen, Igor Semenoff, Cécile Broché, Dominica Eyckmans, Jean - Paul Dessy) - Heartland IsAvailable=True IsDeleted=False ] 202:0:59787244
04/11 23:59:42 Trace: [music/retagextract] extracting tags for LibraryTrack[8985650, David Linx - Heartland (feat. Palle Danielsson, Jon Christensen, Igor Semenoff, Cécile Broché, Dominica Eyckmans, Jean - Paul Dessy) - Standing My Ground IsAvailable=True IsDeleted=False ] 202:0:59787245
04/11 23:59:42 Trace: [music/retagextract] extracting tags for LibraryTrack[8985906, David Linx - Heartland (feat. Palle Danielsson, Jon Christensen, Igor Semenoff, Cécile Broché, Dominica Eyckmans, Jean - Paul Dessy) - Solace IsAvailable=True IsDeleted=False ] 202:0:59787246
04/11 23:59:42 Trace: [music/retagextract] extracting tags for LibraryTrack[8986162, David Linx - Heartland (feat. Palle Danielsson, Jon Christensen, Igor Semenoff, Cécile Broché, Dominica Eyckmans, Jean - Paul Dessy) - Sleep IsAvailable=True IsDeleted=False ] 202:0:59787247
04/11 23:59:42 Trace: [music/retagextract] extracting tags for LibraryTrack[8986418, David Linx - Heartland (feat. Palle Danielsson, Jon Christensen, Igor Semenoff, Cécile Broché, Dominica Eyckmans, Jean - Paul Dessy) - Praise IsAvailable=True IsDeleted=False ] 202:0:59787248
04/11 23:59:42 Trace: [music/retagextract] extracting tags for LibraryTrack[8986674, David Linx - Heartland (feat. Palle Danielsson, Jon Christensen, Igor Semenoff, Cécile Broché, Dominica Eyckmans, Jean - Paul Dessy) - It Was Always You IsAvailable=True IsDeleted=False ] 202:0:59787249
04/11 23:59:42 Trace: [music/retagextract] extracting tags for LibraryTrack[8986930, David Linx - Heartland (feat. Palle Danielsson, Jon Christensen, Igor Semenoff, Cécile Broché, Dominica Eyckmans, Jean - Paul Dessy) - Fisalina IsAvailable=True IsDeleted=False ] 202:0:59787250
04/11 23:59:42 Trace: [music/retagextract] extracting tags for LibraryTrack[8987186, David Linx - Heartland (feat. Palle Danielsson, Jon Christensen, Igor Semenoff, Cécile Broché, Dominica Eyckmans, Jean - Paul Dessy) - Rest from the World IsAvailable=True IsDeleted=False ] 202:0:59787251
04/11 23:59:42 Trace: [music/retagextract] extracting tags for LibraryTrack[8987442, David Linx - Heartland (feat. Palle Danielsson, Jon Christensen, Igor Semenoff, Cécile Broché, Dominica Eyckmans, Jean - Paul Dessy) - Eavesdropping IsAvailable=True IsDeleted=False ] 202:0:59787252
04/11 23:59:42 Trace: [music/retagextract] extracting tags for LibraryTrack[8987698, David Linx - Heartland (feat. Palle Danielsson, Jon Christensen, Igor Semenoff, Cécile Broché, Dominica Eyckmans, Jean - Paul Dessy) - Ninna Nanna Pitzinnu IsAvailable=True IsDeleted=False ] 202:0:59787253
I would remove this album and reboot the Core to see if that resolves this issue.
Thanks,
Noris