Steps to reproduce:

• Unlock Setup
• "Select Plugins to install"
• Press "None"
• Press "Install" to skip
• Press "Save and Finish" without entering user details
• See an NPE getting logged, and a form validation error
• "Continue as admin"
• "Start using Jenkins"

Actual result:

• Logged in as 'admin'
• Current URL:http://localhost:8080/securityRealm/firstUser
  • Trying to submit the form will fail as a user already exists

Expected result:

• Logged in as 'admin'
• Current URL: http://localhost:8080/

Notes:

Requires the failed form validation step, AND 'continue as admin' to happen.