i mean i did not logged out and just left the computer for lunch time ( one of the 3 times i remember having to log in back ) and when i came back on the computer , i had to log in back . Another instance was when i opened other tabs to check on something ( while assuming i was still logged in on the site's tab ) , when i came back to the site's tab i had to log again to post the comment .

i don't know if it is in http or https , i'll have to check it