Firefox shortcuts go away after installing user.js this may be a common problem just want to ask.

[LUBRICATEDFISH]

BEFORE YOU BEGIN

I have attempted the following troubleshooting suggestions:

• [X ] The issue persists when using Firefox in Troubleshoot Mode.
• [ X] Disabled DNS-level content blocking (AdGuard Home, NextDNS, Control D, RethinkDNS, PiHole, etc), cleared my DNS cache, and used my ISP's DNS resolver (if applicable).
• [X ] Cleared website data, restarted Firefox, and my issue persists.
• [ X ] I have created a new profile. The issue persists when using the current user.js file on GitHub. (Must be in a new profile and a new user.js!)

REPORT

Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
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Screenshots
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Desktop (please complete the following information):

• OS: Windows 11
• Browser: Firefox
• Version: 133.0.3

Additional context
Add any other context about the problem here.

[yokoffing]

1. https://github.com/yokoffing/Betterfox?tab=readme-ov-file#required-reading
2. https://github.com/yokoffing/Betterfox/wiki/Common-Overrides#instructions
3. https://github.com/yokoffing/Betterfox/wiki/Common-Overrides#new-tab-shortcuts