Back button exits app on Android

It seems as though if I press the back button on my navigation control root page not only will it pull me to the Android home page, but it will also exit / kill my ionic app. This is not the case however if I switch out of my ionic app using my task manager. I can switch out of the app and then back in and the app resumes as I would expect.

Any help wold be awesome. Thanks in advance!

P.S. I have had a look at this method registerBackButtonAction(fn, priority) and after some reading users are reporting this could help, however i’m not sure how.