- Install BMfG: https://addons.allizom.org/en-US/firefox/addon/black-menu-for-google/ - Open the popup - Check the browser Console Results: lots of `Unknown localization message [...]` errors

I get a bunch of "ReferenceError: deprecated caller usage" but no localisation errors when running the Chrome version from the Chrome store in Firefox 51.

Unknown localization message ser234 cj-extensions.js:1 Unknown localization message ser235 cj-extensions.js:1 ...... in 54.0a1 (2017-02-20) (32-bit), with https://chrome.google.com/webstore/detail/black-menu-for-google/eignhdfgaldabilaaegmdfbajngjmoke.

I don't see any of these. Are these due to a bug in the Firefox code or due to the extension? Is it because you are in a different locale? It's hard for me to spot with out access to the uncompressed source. Do you have access to that? As it is, this bug is unactionable.

Nightly 54.0a1 (2017-02-20) (32-bit) (en-US) on Win10 (zh-CN). Click the square to search/organize, wait a few seconds, you should see these error messages in the browser console.

Per policy at https://wiki.mozilla.org/Bug_Triage/Projects/Bug_Handling/Bug_Husbandry#Inactive_Bugs. If this bug is not an enhancement request or a bug not present in a supported release of Firefox, then it may be reopened.