If you tap on the screen after the app is launched and before the Touch ID prompt comes, you can make the blurring effect disappear. It appears that the app is fully open during that period. You can tap on things and they would work, although for a small period of time. This would be a big security issue for devices (or iOS versions) that take a bit longer to prompt the user for Touch ID. I could defrost a card by quickly tapping on Card and then Defrost Your Card all without being given access by Touch ID.
I was able to do this on iOS 10 Developer Beta v4, but v5 is quicker and the app prompts Touch ID before I have time to tap Defrost Your Card, although I can still go into the Card page.
PS. I have an iPhone 6S