App version: 1.2.4
Android: 4.1.1
Phone: Nexus S

After following these steps I get back to the main page and the header where it says MusicBrainz is not completely visible because it's off the top of the screen.

Steps I took:
1. Tap scan
2. Scan a barcode that's not in the database
3. Tap back button when viewing the "Barcode not found!" dialog or from the "Submit Barcode" screen
4. UI error