I’ve noticed that I can consistently go into either the “Password” or “404” utility pages and generate a third duplicate page that is unremovable from the Utility Pages section (ie there is no way to remove/delete the auto-duplicated page.
For example, if you select the Password page, and in the settings rename it to Test, a new utility page will get generated called “Test”. This only appears to happen on the first rename. If I then go and rename Password or 404 again, the duplicate page isn’t generated.
There is no way to remove this auto-duplicated pages from the Utility section, which is relatively frustrating from a housekeeping standpoint.