URL Change works but WP admin is redirecting to new URL instead of 404

[ksai847]

Describe the bug

After changing the login URL using the WP hardening plugin URL change feature, the URL change works but strangely the wp-admin URL is redirecting the new URL instead of showing a 404 error.

To Reproduce

Steps to reproduce the behavior:

1. Open the WP hardening plugin and go to "Security Fixers"
2. Now add the URL slug into which you want to change instead of wp-admin and save it.
3. Open the wp-admin URL and you'll see it redirecting a changed new URL without showing a 404.

Expected behavior

WP-admin must show a 404 page instead of showing the new URL login page.

Screenshots

Desktop (please complete the following information):

• OS: <Windows 10>
• Browser
• Version <88.0.4324.150 (Official Build) (64-bit)>

Used versions

• WordPress version: 5.6.1
• WP Hardening version: 1.2
• Tested with theme: Neve