it did, but it's not consistent... one day it's sucking 16%, the other day, 4%... sometimes does show up on the battery usage list at all... so I dunno...
for now, i'm reinstalled it and monitoring it... i can at least get through my work day, so i'll keep it on for now... I have turned off the Nearby Friends alerts, as well as Messenger Location, and set the refresh to Never. I think all those help. Oh, and signed out of chat.