Steps to reproduce: 1. Open about:addons 2. Click on 'See more addons!' at the end of the page. 3. New tab will be opened at url addons.mozilla.org Expected results: Request policy blocking requests 'https://ssl.google-analytics.com'. Actual results: FF performs requests to curl 'https://ssl.google-analytics.com/' without been blocked. User policy has not permissions for mozliia.org to google-analytics.com: Screenshot: https://snag.gy/NcMsTm.jpg Versions: FF 52.0.1 from Ubuntu (64-bits) RP: 0.5.28-1.signed.1-signed