Control: fixed -1 76.0.1-2 I can confirm that the bug has been fixed by adding --allow-addon-sideload option for mozconfig script.
The bug was pretty severe because even none of firefox-l10n-* langpacks were working. Now the problem has been solved, at least webext-noscript, webext-ublock-origin and webext-debianbuttons, and those langpacks are just working.
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