PnH is not accessible in GCLI in Firefox 44 on Mac OSX

[pejaab]

I seem not to be able to make PnH properly work in recent versions of Firefox. Is there something I am missing? I got it to work out of the box in Firefox 38 ESR, but I am not sure, from which version on it is broken

[blshkv]

It is probably due to new security requirements:
https://support.mozilla.org/en-US/kb/add-on-signing-in-firefox?as=u&utm_source=inproduct