Apple Music Play Count/Last Played

I know there are a thousand threads on here dealing with play count problems in iTunes or the newer Music app, they nearly all seem to deal with the same problem, which is song plays from iOS devices not syncing or counting in the desktop Music app. My problem is kind of the opposite. The vast majority of music I play is from my iPhone, and my iMac Music app keeps track of all of that with no problem. I see counts and last played update within a day or two at most. However, anything I play directly from the Music app on my iMac never updates the play count or last played. I have no idea when this started, because it used to work, but it definitely does not now. I keep everything up to date and I don't have any music actually stored on my iPhone - it's all streamed from the cloud but using my library, not the Apple Music service (which I am subscribed to). Does anyone have an idea what might be going on here?