what happen to friendlist ?

i noticed after todays update i see somebody online in my friendlist list who has deleted me long ago

he shows online thou i cant udate info but why is he visible online ?

this means everyone i deleted but he/she not deleted me will see me online too ?

this is seriosly messed up and must be investigated or undo this kills privacy

like this even every relationship may get terrorized by somebodys ex now because they not deleted him/her but seeing now online while the other side have deleted long ago -.-