without doing a new post that has not changed

why when it will make setting changes should bring new post first and then the newly changed settings?

without doing a new post that has not changed

Hi

I am not really sure what you mean bu I assume that you have a delay in applying the changes made in theme panel.
This issues are usually caused by cache so after you make any changes try to clear all caches then test the site again.
Let us know how it goes and if this is not what you mean please provide more specific details abut your issue also provide your site url.

Thanks!