I've figured out what tracks it's not loading. It's tracks added to the database prior to a certain date. I don't know what date, but it may have something to do with why my tracks weren't syncing across devices correctly after 6.0.4. I went back to 6.0.3 and am noticing this issue now, however, I never used matching up until recently. So I don't know if switching to 6.0.4 and going back to 6.0.3 is what broke it.
But yes, it's definitely songs that have an older "Date Added" that will not show up in matching for some reason.



