Netgear ReadyNAS 314 has weird login issues

Hi, I’m wondering if anybody who has a RN314 can test to see if they have the same issue as me.  I recently started having login issues with my NAS, and it would ask me for the password twice.  I recently bought a brand new hard drive and all has been working well.  Until, yesterday I left the login page open on my desktop (login page after I had signed out of the unit)  (more then 3 hours) and when I entered in my password, it rejected it and brought it up again.  I have verified and I am entering in the correct password.  It never happens unless, like I said I leave the login page open on the NAS after logging out (when refreshing the page and entering in the credentials it works fine).  I kind of recall that I was having this issue on day one when I bought this NAS back in 2014, but would like if somebody can test to see if they are having the same issue.  In order to test this, you have to login to the admin page, logout, don’t refresh the page/don’t close the browser, wait more then 3 hours, then login and see if the issue comes up.  NAS is running 6.10.9 but I tested it and came up on 6.10.8 also.  I would really like to know if something is wrong with my NAS or it’s simply just a bug with  every NAS.