What kind of conflict would you expect.? In case Tracking Protection would block specific content then an extension like uBlock Origin wouldn't be aware of this because TP would block this content at a higher level. Firefox shows a message in the Web Console when content like mixed content is blocked or content is blocked via Tracking Protection. *https://developer.mozilla.org/Tools/Web_Console *https://support.mozilla.org/en-US/kb/control-center-site-privacy-and-security-firefox