No artwork - even on 5.2.1 (XDJ-RX2)

I've installed 5.2.1 as above.  When you scroll through in midi mode you can see the artwork.  When you click on the info button on the XDJ-RX2 for the track that's playing the Cover Art is blank on the RX2 screen.

The only way to see the cover art when you press INFO is in USB mode.  Did this happen with the 1.20 firmware?  I can't remember.  Also posted in Rekordbox forum.