[Tepix]

I see the page title in the firefox tab: "@zuck Let's do thisl Welcome to"

and then there's a rainbow colored logo with an @ symbol in the middle of the page. That's it.

Firefox, ublock origin, private browsing window, europe.

[xPaw]

Likely blocked by Firefox tracking protection because it uses Facebook domains.

[sys_64738]

So you must disable UBlock Origin to use Threads? Life is full of choices to be made!

[MikusR]

No. Just the Firefox built in enhanced tracking protection for that particular site. Or wait for Mozilla to whitelist the cdn domains.