Pivot table expands multiple rows at same time

Hi, I have created pivot table with data model since I required distinct count.
All is working well with the pivot table except when I expand rows.
 
These + signs when I press to expand it to show data what happens is instead of expanding just the one + sign that I pressed it expands multiple of them.
This is how it looks.
 
Is there some setting that is causing them to expend all together and can I change so that only the one that I press would expand.

Thanks