Bad post url returns archive instead of 404 error

[tidyui]

Discussed in #2076

^{Originally posted by selaromdotnet June 18, 2024}
I searched the issues history for this issue, and found this one: #261 which shows closed as done. however on my instance (version 11.1.0) if I go to /blog/non-existant-post-slug I see the regular /blog archive page.

Did I miss a step or is something else wrong here? thanks!