This issue comes from the fact that even though the domain is now changed to x.com, it still tries to load content from twitter.com which Firefox thinks is social media tracking because it's coming from a different domain than the one you're on.
It's a hilarious and dumb oversight with this change.
Web developer here: This is 100% sloppy code on the part of Twitter. Like... I can't believe the amount of incompetence required.
I can, didn’t all the better developers leave when Elon took over?
One of the managers in my org used to work there, and lost his job post-takeover. Apparently most that were left were on L1B visas, so had no opportunity to move elsewhere. His theory was that Elon knew exactly what he was doing, because he now has a team of engineers in their late twenties and early thirties that'll basically do whatever he wants, or risk uprooting their families back to their home country.
They're probably still great engineers, but when you're doing the job of multiple teams, or things have zero coverage, shit is going to slip.
My headcanon is that they are still there, forced to watch as Musk personally "improves" their code.
That or he fired them, yeah.
Yeah isn’t this related to CORS?
Likely on purpose. X wants to data mine you more.
They should've just moved the other twitter domains too 🫠
Totally. I got the error message yesterday and didn't try once to circumvent it. Twitter is that important to me
100rabh™@mastodon.social to 
This issue comes from the fact that even though the domain is now changed to x.com, it still tries to load content from twitter.com which Firefox thinks is social media tracking because it's coming from a different domain than the one you're on.
It's a hilarious and dumb oversight with this change.
Web developer here: This is 100% sloppy code on the part of Twitter. Like... I can't believe the amount of incompetence required.
I can, didn’t all the better developers leave when Elon took over?
One of the managers in my org used to work there, and lost his job post-takeover. Apparently most that were left were on L1B visas, so had no opportunity to move elsewhere. His theory was that Elon knew exactly what he was doing, because he now has a team of engineers in their late twenties and early thirties that'll basically do whatever he wants, or risk uprooting their families back to their home country.
They're probably still great engineers, but when you're doing the job of multiple teams, or things have zero coverage, shit is going to slip.
My headcanon is that they are still there, forced to watch as Musk personally "improves" their code.
That or he fired them, yeah.
Yeah isn’t this related to CORS?
Likely on purpose. X wants to data mine you more.
They should've just moved the other twitter domains too 🫠
Totally. I got the error message yesterday and didn't try once to circumvent it. Twitter is that important to me