Most of the time when I exit an app, i.e. gmail, calendar, Chrome or numerous others, Facebook opens and it most instances it won't close unless I hit the home button. Any ideas on why this is happening?
I know exactly what you are talking about. Sometimes FB opens and it wasn't one of the most recent apps. It just appears. If you keep on backing out of the app it will just cycle between two or three different apps. It always seems like FB is the problem with it. I have to click on the home button too. I am part of the beta testing group for FB. Maybe it's on their end. I will share it there and see if it's something they can look into.
This happens to me too. Also when I end a call, the Facebook screen is open.
Do you guys also have Facebook Messenger app installed? And if yes, do you have the chatheads feature turned on? If you turn that off, does that help?