Reappear frequently, cluttering the bookmarks menu.
   Cannot be deleted through the bookmarks library or toolbar customization options.

   Removing the entries using the bookmarks manager.
   Resetting Firefox, creating a new profile, and disabling extensions.
   Running Firefox in safe mode.

   Firefox version: [Your Firefox version]
   Operating System: [Your OS, e.g., Windows 10]

I am experiencing an issue in Firefox with recurring entries in the bookmarks menu, such as "About Us" and "Customize Firefox." These entries: Reappear frequently, cluttering the bookmarks menu. Cannot be deleted through the bookmarks library or toolbar customization options. I have attempted the following steps without success: Removing the entries using the bookmarks manager. Resetting Firefox, creating a new profile, and disabling extensions. Running Firefox in safe mode. The issue persists even after these attempts. Is this a known problem or an intentional feature? If so, how can I disable or permanently remove these entries? Additional Information: Firefox version: [Your Firefox version] Operating System: [Your OS, e.g., Windows 10] Thank you for any guidance or fixes!