is folder.jpg in the artwork retrieval filter in Tags(1) preferences?
Yup. It's first. It's, actually, "Folder.jpg", (captilized) followed by "Folder.*". The media is on my NAS, shared over SMB/CIFS. The file name is, actually, "folder.jpg" (not capitalized). But it's windows, so it doesn't care right? Anyway, it appears in some places so it did pick it up.
I closed/started MB again, and the artwork is still missing in the 2 places shown in the screenshot.
When I hit Edit Track the art work is displayed properly on all album tracks.
Just to add some more strange details: I added album art for 5 albums in the same way (dropped folder.jpg....). 3 were picked up just fine after a startup scan (after not being picked up when I re-scanned files), 2 ended-up looking like the screenshot above.
MusicBee 3.5.8516 / Windows 10 (64-bit) / Intel i5-3470 / 8GB RAM
Media on NAS (CIFS share)
20K+ tracks, predominantly FLAC ; converted to mp3 (lame -V 0) when synced to a Cowon D2+
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