Environment: Operating system: Windows 10 Pro Firefox version: Firefox Nightly 63.0a1 (2018-08-16) (64-bit) Prerequisites: Enable Basic Tracking Protection Steps to reproduce: 1. Navigate to: https://www.bookonthenet.net/west/premium/eresmain.aspx?id=fV6JvIOofc%2b2ji8qUmj6oFeYCvSRXOpCb%2bUjzmStC4Q%3d#/guest/1:3:R:8 2. Click on the "Search Availability" button. 3. Click on the Book Now button. Expected Behavior: The "Guests" page is opened. Actual Behavior: An endless spinner is displayed over the "Guests" page. Notes: 1. Screenshot attached: http://prntscr.com/kjr49e

This is related to `trackingprotection` breakage #1101005 Looking at the devtools console, here are the blocked resources: The resource at “https://connect.facebook.net/en_US/all.js#xfbml=1” was blocked because tracking protection is enabled.[Learn More] eresmain.aspx The resource at “https://ssl.google-analytics.com/ga.js” was blocked because tracking protection is enabled.[Learn More] eresmain.aspx The resource at “https://js-agent.newrelic.com/nr-1071.min.js” was blocked because tracking protection is enabled.[Learn More] eresmain.aspx So these are the domains to test: connect.facebook.net ssl.google-analytics.com js-agent.newrelic.com I opened the URL in a fresh browser profile (Firefox Nightly 63, uMatrix installed, normal mode) and loaded the page. The "Guests" page did not fully load. I disabled the Spoof Referrer option in uMatrix and then *WHITELISTED*: -facebook.net -googleapis.com After this, the the spinner did not became stuck. The other resources didn't help. http://prntscr.com/kjqxqm facebook.com can be found in the disconnect-blacklist.json, disconnect-entitylist.json and disconnect_mapping.py. googleapis.com can be found in the disconnect-blacklist.json and disconnect-entitylist.json. So in conclusion: facebook.com - Social = [tp-social] googleapis.com - Content = [tp-content]