Half-empty Stadium & Full 5% Possesion Bonus: How is that possible?

[JuTu Aconcha]

As far as i understand the only way to get 5% bonus in your stadium is to get 100% assistance.
For example if you have a 5K stadium and you get 4.99K assistance you only get 4%.

Am i wrong?

So, i play against this guy (2nd place), away game, i watch the game. See half-assistance in his stadium, should have 2% or 3% tops bonus. He gets all 5%.

Is this a bug? Should i report it in Nordeus Support ?

Please appreciate a reply if someone knows.
Leave pic as obvious evidence: stadium of 45K, assistance of 28K, 5% bonus


Best regards,