Pasting link and entering to issue on github not working on firefox

[BabciaGangsta]

WORKING: paste this url and enter github.com/home-assistant/supervisor/issues/
NOT WORKING: paste this url and enter github.com/home-assistant/supervisor/issues/6709

github.com sent back an error.
Error code: 401 Unauthorized

Firefox version 149.0.2 (tried on few PC)
Works on previous versions.