Change wp-login.php to anything you want.
My support thread:
I had the Meta Widgets, active in the sidebar.
I noticed that the link "Log in" shows the custom URL.
I also opened a support request to another problem: https://wordpress.org/support/topic/how-to-disable-your-login-page-is-now-here
You must log in to submit a review. You can also log in or register using the form near the top of this page.