I created an album smart playlist with the only rule offline status is fully cached. The playlist is empty even if there are albums fully cached (see the image).
If I set offline status is cached, the album appears but with also partially cached albums.
filter on tracks instead of albums. may be a bug, but tracks should work.
I have a smart playlist containing cached tracks, then I filter albums as being in that playlist. You can’t filter based upon being in a smart playlist, so you’ll have to save a copy of the smart playlist as a normal playlist. A bit convoluted, but it works.
Alternatively, you can use the “Hide items not available offline” filter in the filter menu.
I also think it’s a bug. Thanks for the suggestion, but they don’t work very well; both would include/show albums that are partially cached. For this, I can use the offline status “is cached,” which works.