Thanks for determining a path forward. I use the Yate tag editor, and especially so for my box sets to segregate one or more discs in the box set as described here.
However, in that solution, I added the album title to the Roon Album Tag in Yate. Even though I’ve used this methodology for a few years, I have not seen box sets pop up in the Roon tags until a few months ago, and that was about the same time as my Roon server began to get a bit funky.
Following your guidance, I removed the Roon Album Tags from Yate, but still retained the Work and Part Fields:
I then went into Roon and manually removed those box sets with the unintended tags (in red boxes) and then ran a Force Rescan:
I think that cleaned things up. I now have only the few tags that I want to retain:
Can you run another diagnostic report to see if things are running close to normal?
David