S9 tempered glass too narrow

[Android Central Question]

I ordered a tempered glass protector for my S9, and when I tried to attach it, it was so narrow. It doesn't even come close to the edges. I am trying to find out if it's an error or it's supposed to fit like that?

 

[Rukbat]

Curved screens are difficult to get decent glass protectors for, but if you're willing to pay for it, the Whitestone Dome is supposed to be the best. And it's supposed to cover edge to edge.