Go ahead and open an issue, though I suspect it is a problem with the file. You could try straight up re-encoding it instead of repackaging it like we did earlier.
Jellyfin 10.10.0 (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)