I was playing a match and the other team had a 10% possesion bonus.

5% Attendance
8% Manager
5% Attendance (Yes, again!)

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After the match, I checked this on the Fixtures menu, and the Attendance bonus appeared once.

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The screenshots are in spanish.

Please check this, I lost 4-1, And I don't know if this was just an interface bug or if it really gave the other user a 10% bonus.