The new iPad Pro 11 has a new Display aspect ratio of 4.3:3 instead of 4:3. So you have lost space of the screen which are filled wirh black bars. Its not only annoying, also on bug maps like Artic Stronghold its hard to see the left states/areas.
Hope there will be support soon for the new iPad. The new aspect ratio shouldnt be a problem, on my Galaxy S8 with 18:9 is everything fine.