非常奇怪的视图行为，当实现3D触摸预览

I'm running into a very strange issue with 3D Touch previewing in my app. As you press into a cell to show a preview, a view seems to grow out of the top left corner, until it's about to show the preview view controller, at which point it's the full size of the view controller. I'm running into a very strange issue with 3D T