🐞 Active features randomly working/not working

Concise Description

Recently switched from Windows to Linux and getting to know the ins and outs. I'm using Zorin which is based on Ubuntu.

I also used this extension on Windows where every setting worked perfectly but it seems that it's almost random what does and doesn't work on Linux.

The first image shows my active features which do work. No complaints there, but the next screenshot:

The only thing that works consistently here is the subs being at 50% size.

Not pictured is "hide cards" not only does it not work, but since youtube added a hide buttons for their terrible cards, I can't hide them. It just says 'null' when I mouse over it.

I'm not really sure how to troubleshoot it.

Browser/s

Firefox

Other Browser:

Only FF on Windows where all active features worked.

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

Setting it up in Linux

Since when?

Since I setup Linux on my laptop just a month ago.

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

4.1400

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

improvedtube.json

Your YouTube-Document

No response

OS / Device:

Zorin (Ubuntu)

No source file or test is named. Start by reproducing the issue in Firefox on Zorin/Ubuntu with the exported improvedtube.json, then inspect the browser console while testing the listed active features, including hide cards. Done should identify a specific reproducible failure and its console evidence rather than treating the combined report as one bug.