Problems after converting pages to posts

Hi, I have recently set up a new blog and started writing some articles for it. The problem is that i started writing a page instead of a post. I realized this before publishing so I copied all of the content to a new post and deleted the unpublished page. After publishing the post I started having problems.

The published post doesn’t show as it should. The only thing I see is a small version of the main image. I downloaded and installed a plugin that allows me to convert pages to posts and vica versa. After converting the post to a page it started to appear as it should. When converting it back to a post I have the same problem.

I deleted all revisions and drafts just to make sure but the problem persists. My permalinks are fine. Any idea on why it is doing this?