webextension.restrictedDomains: List of domains on which extensions are disabled by default

[allo-]

Firefox blocks addons on certain domains, like addons.mozilla.org. This can make sense as an addon could try to block deinstallation via addons.mozilla.org, but AMO also loads Google tracking scripts, which are not filtered by adblock, uMatrix, and other extensions.

extensions.webextensions.restrictedDomains=""
privacy.resistFingerprinting.block_mozAddonManager=true

(https://superuser.com/a/1354612)