I get what you are saying. I know it's a little weird. The fact that it is an intro video for the course, and that it is the only video in the lesson makes it like that. If you look closely, you can see that the left one and the top one are the same (lesson description, and it just so happens that on lessons those two spots have the lesson desc), but the video description is slightly different.
Sorry if it's weird to have all the descriptions there. We're currently looking at ways to make the course experience better for our end users.