Any extension that adds a toolbar button has a problem. For example, the link below is the drop-down box for HTTPS Everywhere. As you can see, the box is almost empty. Just to be clear, all other extensions like AdBlock have the same empty drop-down box. What I'm calling the "drop-down box" is really the GUI for thousands of extensions.
If I remove and reinstall an extension the empty box problem seems to be resolved. The problem reappears after closing and opening Tor Browser.
Should I uninstall and reinstall the browser? If not, what is the solution?