Forums logging me out

Hi i dont know if this is happening to many or just me or is there a new option i should enable but every time i refresh page it loggs me out of my forum account even though i have ( remember me ) on :) is it a bug? Or new option from sitting ? Or new security protocol?
Thanks for responding in advance :)

Private browser incognito mode will do that, also having it automatically delete cookies once site is left will do that.