Firefox 143.0.4 (64-bit) on fully patched Windows 11 has an issue with FIDO2 keys, specifically YubiKeys. The keys will register, but then a window will pop up and ask if we allow that access. I allow the access, the key gets registered, but then when I attempt to use the key, it fails. If I try it in a different browser, the key works fine. Hope the devs see this.