Change of effort distribution for same exercise?

Hi everybody,

could anybody please explain to me the following interesting thing I have noticed today?

When I go to the excercise page of my team and open the settings of the "technique" training I see the following distribution of the efforts:

Passing □□□□□□
Finishing □□□□□□
Dribbling □□□□□
Tackling □□□□
Set pieces □□

If I change the excercise to another one and then back to technique the distribution of efforts changes to this:

Passing □□□□□
Finishing □□□□□
Dribbling □□□□□
Tackling □□□□
Set pieces □□□□

Could you please explain to me why? Does this have to do with the fact that I train technique since some weeks? Does the effort distribution change when training the same excercise for loger time compared to starting it new?

The 2nd image is just the default view, thats how it will show to everyone, until changed manually.