Timer/time limit doesn't seem to work

I seem to have 2 issues with the time

(background, originally had add-on pack installed, now onlinefamily.norton - using norton 360 3.8)

 

1.   after parental extension of time,   the timers displayed do not update with the new amount of time.

 

2.   seems user can log out and back in,  and start  a new session with full time limit.   if limited to 1 hour,

       they can log out when time expires, and log back in, and get a new full hour....

 

are these known problems? or is there some way to fix?