Wordpress forces verbose page rewrite rules when posts permalink start with a static string

[anonymized_6443559]

I have recently come to notice that while my permalink structure for posts starts with a static string the permalink is /blog/%postname% that forces the use of verbose page rewite rules, just like how using /%postname% or /$category%/%postname% would.

However use of a static string to start the posts permalink should not require verbose page permalinks to work.

I think the issue is that WordPress recognized that /%year% or some other numeric value isn't starting the permalink so it assumes that verbose page rewrite rules need to be activated.

[Denis-de-Bernardy]

#11279 and #9824