Double screen and Possibility to view a larger part of the map

A friend tried to play LoL in double screen and the result was suprising: https://cdn.discordapp.com/attachments/181798339019276288/355390161091166208/unknown.png.

I'm pretty sure that you're not mean to be able to see more than other player.

Seems like the visibility is only tied to the height of the screen and with extra large monitor you can see more.