Restrict third party cookies and other tracking data is unchecked in ESR52 based Tor Browser
Our first party isolation patches are activated right now (ESR 45 based Tor Browser) if the checkbox "Restrict third party cookies and other tracking data" is checked. But that's not the case anymore with an ESR 52 base. We should fix that or remove that checkbox altogether.
It might be a sign, though, that some of our first-party isolation code is not working. We should doublecheck that that's not the case