Hard to say. I don't know why it was working before, but I still think most of the issue is with the kernel bug present in the version unRAID beta 7 is using.
Jellyfin 10.10.3 (Docker)
Ubuntu 24.04 LTS
Intel i3 12100
Intel Arc A380
OS drive - SK Hynix P41 1TB
Storage
3x WD Red Pro 6TB CMR in RAIDZ1 (JF Library)