Re:Firebug lives on in Firefox DevTools
by nachtigall on Wednesday December 21, 2016 @06:45AM
(#13228397)
Don't think you're right. You can use FDE for add-ons development, just like parent said.
See your sibling below: > Unsigned addons cannot be enabled on beta or release. That was only available for a limited time. Now they can only be enabled on alpha (aka developer), nightly, or special unbranded builds.
It is possible, you've just chosen to disallow it.
To be clear: the Firefox team took deliberate steps to make sure that add-ons can't be tested or developed in the stock builds of Firefox downloaded from Mozilla.