First, and most important, thank you for looking into this issue.
I doubt that anyone will actually have logs to prove it, but I’m not convinced that the old scanner scanned every unmatched album whenever a file was changed in the library. I believe the old method only scanned the folders/files that have changed, respecting the settings Scan my library automatically and Run a partial scan when changes are detected I believe attempts at re-matching occurred during maintenance as a Scheduled Task
My experience is unmatched albums are never matched, even when they are available at MusicBrainz, and contain embedded metadata (MusicBrainz ID tags) Unmatched albums will remain unmatched after a scan initiated automatically by a change in the library, as well as after scans that occur during the Scheduled Maintenance periods.
It seems to me that the folders and files are simply scanned, but there is no indication of an attempt at matching. I have logs posted in this thread, where I deliberately left albums unmatched for a month. Those albums had to matched manually.
Again, thanks in advance for any insight you can provide in solving the problem.
