6 hours ago
So it seems I found a "fix". When sideloaded version 18.11 (tried all 19.x versions, doesn't work) True HD Atmos does get a passthrough and it work. So it is a bug in Jellyfin. Not much help as with 18.11 auto strip of DV to HDR10 doesn't work so I don't get HDR10 on my Samsung S90D.