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.
We’re getting closer and closer to the complete destruction of this worthless shithole, keep it up elon!
Unfortunately, shaking off users who are digitally conscious enough to use Firefox (and recommend alternatives) probably improves Twitter’s odds.