This post should display a featured image, if the theme supports it.
Non-square images can provide some unique styling issues.
This post tests a vertical featured image.
Related Post
Many Categories
This post has many categories.
Post Format: Video (VideoPress)
[wpvideo tFnqC9XQ w=680] VideoPress, especially as a video post format, usually provides some unique styling issues. You will need to install Jetpack or Slim Jetpack plugin to turn the shortcode into a viewable video.