[BUG] Subtitles not working on Firefox

[z1R]

Is there an existing issue for this?

• [X] I have searched the existing issues

Current Behavior

After an update to 10.9.* subtitles settings no longer work in Firefox. It works fine in other browsers. I have tried it in "troubleshoot" mode where every settings are default and addons are disabled but it's still broken.

Expected Behavior

No response

Steps To Reproduce

1. Use Firefox

Environment

- OS: Windows 11
- How docker service was installed:
The docker is on unraid.

CPU architecture

x86-64

Docker creation

It's on Unraid

Container logs

https://pastebin.com/7CkWAyvB

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[j0nnymoe]

This isn't going to be a container issue, you'd need to seek support from jellyfin themselves.

[z1R]

I just tested another docker and the problem is not there....

[j0nnymoe]

Just tested with ours and jellyfin went off, found the subtitles and displayed them in browser.

[z1R]

Ah sorry for not being more clear. The subtitles work, but changing from the setting does not. If you try to make them smaller, different shaders or colors then it wont change.

[z1R]

Did you manage to reproduce that @j0nnymoe?