Working codes on recent posts

You can check here on how to manually trigger short codes from php:

https://codex.www.ads-software.com/Function_Reference/do_shortcode

What about HTML?

I’m not sure what you are asking about – can you clarify?

where are the ‘recent posts’ visible?

does the problem refer to [frontier-post]?
where is this shortcode coming from?
is that from a plugin?

does this also happen if you temporarily switch to the default theme Twenty Twelve?
and with all other plugins disabled?

if you think it is theme related, please post in https://www.ads-software.com/support/theme/hiero

Ok, I found a solution.

It works with Simple Post Templates plugin.

But still, thank you for helping ??

What I wanted is that the description of a post would make HTML and other codes work instead of just showing the code.