[keycloak-user] We're sorry ... Unknown code, please login again through your application.

Hi All, Am having the following behaviour within keycloak : # 1 / Open my application home page which brings me to the keycloak login page; # 2 / Click on Forgot Password then enter my login and validate. Keep this page open in my browser -this page contains a link : back to login; # 3 / Open the received mail and click on the link to reset password which opens a new tab in my browser; # 4 / Switch to the previous tab where i left the login page open and click on the link back to login; # 5 / A new page opens with the message : We're sorry ... Unknown code, please login again through your application. Could any one tell me why am getting this ? Thanks for your help.