🐞Changes to player don't work

Concise Description

Most modifications to the UI seem to work fine, but none of the changes I make in the extension seem to affect the actual video player. I have autoplay turned off with a default resolution of 360 and subtitles permanently on for example, but none of that actually Sticks

What's weird is that it does work in other Firefox instances, both in this computer and others. I've disabled all extensions except this one and the problem persists.

For reference, this also happens with Enhancer for Youtube. Which works fine in other Firefox instanecs but its broken in this one. Even on its own.

Browser/s

Firefox

Other Browser:

No response

'Steps to reproduce' - Which of our features is required for the bug to happen?

Change anything in the Player settings in the extension

Since when?

Unclear. I started using the extension recently in another computer, then it synced to this one and it was broken, but only in this one.

Does the bug still happen when you log out of YouTube?

Yes

..No? Then please paste your yt.config_.EXPERIMENT_FLAGS. Twice (With the error & Without)

No response

Are any errors or related log-messages shown in the Browser-Console? (F12)

No response

Tested as the only active extension? (incognito mode or another browser users):

Yes

Expected preferred behavior:

No response

ImprovedTube Version

No response

Your Settings (From the Extension's ⋮-Hamburger menu > Settings > Backup & reset > Export settings)

No response

Your YouTube-Document

No response

OS / Device:

Windows 10

Start by reproducing the failure from the extension's Player settings in Firefox on Windows 10, then compare it with a working Firefox instance. Inspect the Browser Console and exported settings, which the report does not provide. Done means changes such as autoplay, resolution, and subtitles persist and affect the video player.