Did some deeper digging. Here what happened:
-
Step one: Focus Filter on Tag-list “Conductor”: 363 conductors. looks good.
-
Add second filter, Conductors of Opera: 83 of them. Looks good
-
Clear both those filters: BANG:
-
Rebooting Server Software: Only brings back “empty” filter framework:
-
Rebooting ROCK:
-
Directly after rebooting: Filters still clogged-up but everything else works, ie Roon has rebooted successfully!
-
Appr. 20 minutes later:
Filter has “reconstructed” itself:
Sorry guys, but there is something really weird going on here.
@BrianW is this one for the two of us again to go figure the pattern 