u/Suspicious-Owl-2019

So i just bought a new asics metarise 2 shoe. When i unboxed it i thought that there was nothing wrong with it, until i looked at the inside. The heel cushioning support lining turned out to be detached or loose, it also expose a bit of the cushion. I’m not exactly sure what that part is called, but here is a photo.

I’m concerned about that loose section; is it supposed to be like that, or has it actually come loose or detached?