Everything is ok on that screen (nice background by the way
).
The reason here is that on this screen we do not strech everything (would be a nightmare with e.g. the rink and position of the shots). I agree, it looks silly with such a big window, so we will think of something to make it more practical.
I always play in a smaller window, 1280*800, then you don't have this massive empty space. Maybe that is an option for you as well.