There are many reasons for the change.
1) Embracing white space is important for a clean and comfortable interface.
2) Many areas of the interface are enlarged for different displays (tablets, mobile, laptops) and to better handle various DPI configurations.
3) There are 5 indicators that show on the 3rd line.
4) 50% of subjects exceed the available space and attempt to show users as much as possible. Your using Test subjects :)
Hope this helps