Could not authenticate you from OAuth2Generic because "Csrf detected".

• I opened up GitLab, and clicked on "login".
• I was presented with the usual EF login screen and entered my credentials.
• I was directed to a page with this error when I tried to sign in:

Could not authenticate you from OAuth2Generic because "Csrf detected".

The URL is https://gitlab.eclipse.org/users/sign_in

I had to log in to file this issue. When I tried the above again, it worked as usual the second time.