[Bug] Recent update shows booksmark manager, not tabs

[BHare1985]

Abstract

The update from April 4/4 causes the tab menu to disappear, I had to reinstall to the 4/5 version.

Steps to reproduce

1. Start Firefox/Librewolf
2. Notice bookmars bar in place of tabs.
3. Disable and enable extension to no avail
4. Notice the updated 4/4
5. Uninstall and reinstall
6. It works, but now updated 4/5.

Expected result

To work

Actual result

Did not load, had to reinstall

Environment

• Platform (OS): Windows 10
• Version of Firefox: Latest Librewolf.
• Extention: The one from April 4th