When adding a contact, this is confirmed by the "V" in the upper part of the screen. The "Scan QR Code" is placed far more prominently. I accidentally repeatedly tapped "Scan QR" to confirm the entered contact details instead of the "V".
I suggest to highlight the action which is most likely to be triggered next (Confirm contact creation) by changing positions, make the button less eye-catching or other UI changes.
Customer support service by UserEcho