Ubuntu
firefox package

  1. Bug #1937343
  2. Comment #5

Comment 5 for bug 1937343

Revision history for this message
Olivier Tilloy (osomon) wrote :

Thanks for the reference to the upstream bug Michael.

Here is some comprehensive documentation: https://wiki.mozilla.org/Add-ons/Extension_Signing (see the Timeline section, the preference that you mention was deprecated in Firefox 48, released 5 years ago).