Difference between Ubuntu and CentOS

[hugsbrugs]

Hello,

I can't understand why proxy-login-automator acts differently between Ubuntu and CentOS in same use case :

• I start proxy-login-automator in standard way in my console
• I test connexion in another console
  curl -v -x http://127.0.01:8081 -L http://1ip.fr
  It works fine on Ubuntu but I get this message on CentOS :
  407 Proxy Authentication Required
  It only works when I add user/pass
  curl -v -x http://127.0.01:8081 --proxy-user user:pass -L http://1ip.fr

Why do I need to set user/pass again as I passed them as arguments when I start proxy-login-automator ? is there any system config I can change in order to work as expected since that's the job of proxy-login-automator to set user/pass automatically ?

Thank for any ideas !

[jessec]

FYI this happens on Fedora 31 too