User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/11.1 Safari/605.1.15 Steps to reproduce: 1. Access a website hosted e.g. under http://server1.com 2. The website performs an AJAX call to e.g. http://server2.com 3. The AJAX result contains a cookie which the browser silently discards Actual results: I was unable to trace why the cookie I thought I received correctly was rejected by Firefox. Expected results: Firefox works as expected, but an improved traceability (e.g. by setting a log-level or developer/debugger-flag) for denied cookies (e.g. a message that "A cookie X has been denied because it originated from a different domain Y for the origin X") would greatly improve the search for problems.

I guess it would be good to have this information in the netmonitor panel (probably in the cookies detail panel).