Blog using randomized string for post slugs rather than default slug setting (%t)

Looking for help with my site's default blog post slugs. I have the default blog post slug set to %t, so posts' slugs should be hyphenated version of their titles.

Instead, all post slugs default to a randomized string. Screenshots of an example post & its randomly generated post slug, as well as the blog slug settings are attached. Any insight into what might be overriding the default slug settings would be helpful. Thanks!