Hi SpeedyPC,
Hard to tell, why they haven't paid attention.
Now as a final solution they have to update all of the browser.
Mind, when you have your add-ons working normally again,
to disable settings in "about:studies" (via the browser-bar),
else you will continue sharing your browser data with Mozilla telemetries,
and that is not the securest settings you could have,
and may not be what you want as a continuous situation.
What I could imagine (might not be too far-fetched a thought),
that this could have been an orchestrated action against tor-browser users,
as tor-browser is basically a Firefox browser fork relenting on NoScript add-on being active,
and there this essential add-on (NoScript) for anonymous browsing was also disabled.
But again that is pure speculation on my part, and probably about such schemes we will never know.
Anyways stay on the square, and browse safely and securely,
is the wish of,
Damian aka polonus