Sign In: Field with incorrect password does not clear

SR:
1) click "sign in" buttom in the top right corner of the jcommune home page (http://uat.jtalks.org/jcommune).
2) Enter valid name.
3) Enter invalid password and click “Sign in”.

AR: "password” field is not cleared,error message “Your login attempt was not successful, try again” appears.
ER: "password” field is cleared,error message “Your login attempt was not successful, try again” appears.