The status code and the page say different things

Checks

• Page says not found but reports success 200_with_not_found_message
• Empty or error page reports success 200_with_empty_or_error_template
• Page reports gone but shows full content 404_or_410_with_full_content
• Redirect to an unrelated page redirect_to_unrelated_page
• Out of stock page still promoted out_of_stock_or_discontinued_page_still_promoted
• Maintenance page reports success maintenance_page_with_200

Findings

• A page now redirects to a page about something else
• The status code and the page say different things

What this relies on

The message is right and the status code is a server default.

How to verify by hand

Search Console soft-404 report.