Skull bonus is different

At the current war round, our alliance is facing 3 different opponents: A, B and C

 

At the skull bonus page, we can see we have a 6,1% bonus

At the battle page for opponents A&B, we can see we have indeed a 6,1% bonus against them

At the battle page for opponent C, we have only 5%

 

 

Isn’t the skull bonus supposed to be the same on all battles?

Bonus is generated at the begin of battle, and not changes.

 

If any battle finish on the map, it change all percentages for new battles

Thanks, I understand that, but all battles have finished/started at the same minute.

The bonuses have been calculated at the end of day1, and have remained the same duuring the whole day2.

 

Isn’t it a bug?