Thumbnails of cover art of > 3MB JPGs aren't created
In my installation, thumbnails of cover art aren't being created for JPGs larger than 3MB (picture 1 below). The cover art is generated and displays after clicking on an album (picture 2), but the thumbnail remains blank when returning to an Artist's folder. Is this a limitation of Subsonic or can I force the thumbnails to be created somehow?
Album "1968 Symphony No. 6 & 7, Karajan (German Later Pressing DGG 24-192) Rockmaninov 2017" has cover art of 3.8MB and its thumbnail is blank.

Its cover displays correctly after selecting the album, but the thumbnail remains blank.

Album "1968 Symphony No. 6 & 7, Karajan (German Later Pressing DGG 24-192) Rockmaninov 2017" has cover art of 3.8MB and its thumbnail is blank.

Its cover displays correctly after selecting the album, but the thumbnail remains blank.
