Navigating back after setting up 2fa on login screen unexpected

[steffenkleinle]

Describe the Bug

Navigating back after successfully setting up 2fa on login screen shows 2fa intro screen again.

Steps to Reproduce

1. Go to login screen
2. Click on Zur Zwei-Faktor-Authentifizierung
3. Setup 2fa
4. Click on back button
5. See the 2fa intro screen (should be login screen)
6. Click on back button
7. See the 2fa confirmation screen
8. Click on back button
9. Only now we are back at the login screen

Expected Behavior

Pressing back once should go back to the login screen

Actual Behavior

3 back navigations are needed to get there with two screens that are unexpected.

Additional Information

Traceback