@ben.turner Removed Apache 2.4.43+6 Lightning Service and re-downloaded following the steps provided; issue persisted with a new install.
After reinstalling the Apache Lightning Service, I created the following sites and tested various setups; results:
| SSL Trusted | WordPress URLs (Settings) | Resulting WordPress Admin URL |
|---|---|---|
| ✗ | http://test-apache-5.local/ | http://test-apache-5.local:10089/wp-admin/ |
| ✓ | http://test-apache-6.local/ | http://test-apache-6.local:10094/wp-admin/ |
| ✓ | https://test-apache-7.local | https://test-apache-7.local:10099/wp-admin/ (ERROR_SSL_PROTOCOL_ERROR) |
The redirect occurs regardless if the SSL is trusted or not. If the WordPress Address is changed, then you can no longer access the admin (without changing the URL back).