Firefox’s Enhanced Tracking Protection (Strict Mode) is known to cause issues on x.com
There were no “issues”; everything was working completely fine. This is a deliberate decision to force people to turn off tracking protection.
I saw a recommendation to use Firefox’s container extension https://support.mozilla.org/en-US/kb/containers, but it’s disabled in private browsing windows, and I always use private browsing windows.
I’ve used Twitter like twice in my life and only because Bungie absolutely insists on providing server updates when they’re down solely and exclusively on Twitter only.
In the destiny community it’s a point of contention. But then again if you’re part of the destiny community literally everything is a point of contention.