There are many releases with Vinyl or Digital Media mediums that claim the packaging is a Jewel Case.  This is always wrong in some way.

There are also many editors who assign "Jewel Case" to all releases, even when the release has 8 or more discs.  Per Style, jewel case is an impossible outer packaging for an 8-disc release.  You'd typically expect a jewel case to never contain more than 2 discs.  (A fatbox would typically contain 3-4 discs.)

https://en.wikipedia.org/wiki/Optical_disc_packaging