Problem importing multiple disc albums

[mellowjello]

All my 2 and 3 disc albums have the correct disc numbers being reported in Jellyfin's 'Edit Metadata' form for each track. Yet they're still grouped into separate albums and the disc numbering behaviour is as follows... With a 2 disc album, Disc 1 will be blank, Disc 2 will be shown at the top. With a three disk album, Disc 1 is blank, Discs 2 and 3 will be shown. Aside from the fact that all the discs are grouped into duplicate albums, it's always Disc 1 which is blank. All my albums are tagged consistently for disk numbering. Something strange going on here. Given that i've never seen this behaviour before with many different media managers, I suspect JF is doing something odd.