There's definitely a panel fit issue there. It almost looks like your middle panel has pulled away from the rear section.
Here's a photo of mine. Bad photo but hopefully you can see that by comparison it is fitting quite snuggly with virtually no gap at all. IMO, the fit is even tighter than it looks in the photo.
"This is a brilliant, brilliant, brilliant car. And that's all really I've got to say. The end."
Clarkson on the 1M