SOLVED: Jellyfin Media Player Linux never shows subtitles

[Host-in-the-Shell]

I managed to get Jellyfin installed and logged in without issues using a live USB with EndeavourOS with the instructions I provided, as you can see here. After some digging around, I found an issue listed on ArchWiki's entry for Jellyfin that may be related to this case.

Some users report that after an update, the web UI does not allow them to log in, and instead shows them the initial setup wizard. To fix this, ensure that in /etc/jellyfin/system.xml the value of isStartupWizardCompleted is set to true.

So you probably want to do something like

Code:

sudo -e /etc/jellyfin/system.xml

to change the aforementioned part. If you've never used a terminal text editor before, you probably default to nano.