It’s been a little over a month since I started this thread and I’d like to note a few things.
First, true to my original frustration and complaint, there has been no response from Roon Support or any other staff member on the state of the duplicate track history bug. Nothing here, where I’ve complained about the lack of progress and communication nor in the original threads on the issue.
Second, in the meantime another user has reported the issue here.
Finally, it’s unfortunate that any momentum this thread might have had towards influencing some sort of Roon response was quickly derailed by the mods when they disrupted the discourse and effectively silenced the discussion around negative customer satisfaction.