Edit: I figured it out. It was caused by the User-Agent Switcher and Manager addon, I use it to switch user agents on one site. I switched it to whitelist mode in the settings and now it works.
Like when I try to log into chat.openai.com, I click the checkbox that I’m human and it just keeps reloading that checkbox without progressing the page. But when I open the tab in a Firefox container (which you can install with the Firefox Multi-Account container addon), it works.
I want it to work without a container open.
No it was a user agent switcher addon. But now I want to check these out 😂!
they are great to prevent fingerprinting, you can test your browser here, but will require some fiddeling e.g. enable java for content sites like YouTube or they don’t work.
https://coveryourtracks.eff.org/
Thanks!