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.
That is a question that deserves its own thread. Just today I got again annoyed seeing how often mainstream press is using Twitter tweets and Twitter videos in their articles :( Good thing is that a significant amount of journalists got off Twitter and moved to Mastodon or something else. What does it take to get lots of open source projects, politicians and public services also move away from Twitter ? Should a new non-profit organization be created to promote leaving Twitter and help people choose for the Fediverse ?