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 hear you … most people are still there (I’ve claimed in the past that it will be the MS Windows of social media, that no one really openly talks about using but is actually everywhere).
But I feel it may be useful to distinguish FOMO and social media gossip from actual useful information. I’m not saying there’s nothing useful on Twitter (I don’t actually know). But we’re talking about microblogging and social media here.