Sam Varshavchik writes:
I am surprised that it actually worked. From what I read, I thought
that
this option gets ignored in the version of Firefox that all the hoi-polloi
use, and it's enabled only in the dev/nightly Firefox builds.
This just went up:
https://blog.mozilla.org/addons/2019/05/04/update-
regarding-add-ons-in-firefox/
The key part is:
"[we] will share a more substantial update in the coming days."
That sounds to me like this will require a new release.