I'm also having some difficulty with displaying a "showcase" post.
I created a page using the showcase template. I the page use as the "Front Page" under reading options (nothing as the post page).
The sidebar and recent posts show up just fine. However, I cannot get the showcase post to work.
I created a post with a featured image, sticky post, and standard format. Yet, the post will not show up at all. It seems the "sticky post" option is the issue. Undoing the option will let it show up in "Recent Posts", but will not show up anywhere otherwise.
It appears the gallery page works, it displays text typed on the page--but not any sticky posts.
Are there other necessary options to get it to work? Should it be in a different format (e.g., gallery)?
The blog I need help with is amesporchnight.com.