It sounds like you might have the favorites filter turned on. Open mSecure, then look at the top right corner of the app. Do you see a yellow star? If so, what happens when you tap the yellow star to turn off the favorites filter?
It's good to hear this fixed the problem you were experiencing. To be clear, the favorites filter is not turned on by default in v6. I'm not sure what happened here after you upgraded, but mSecure is not designed to turn on the favorites filter after you upgrade, especially since we know the confusion that can cause our users.