Found the problem in my case. I had a user agent changer addon let to fake Chrome 123 on Windows 10. DIsabled it and it worked.
this post was submitted on 17 Apr 2024
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Do you use privacy.resistFingerprinting? It's an about:config setting. Some CF sites don't like it
Yes
That's the reason probably, or at least one of them. You may try it out with that turned off, but it's if you don't want to turn it off
I was on IceCat, which is using Firefox ESR 115.9.1, and it had the same issue. I had to disable JShelter's Javascript Shield and Fingerprint Detector.
Same issue on latest version of LibreWolf