I am not convinced I am getting the 20% defence bonus for defensive units on treasure isles.....the defence strength shown under garrison does  not change when i send a set defence value from my haven to the treasure isle, despite getting my lighthouse to level 24....also when i hold the mouse over a defensive unit thats on a treasure isle it shows the defence bonuses...lghthouse bonus is not there,,..nor is it included in the building bonus figure which remains on the 20% i get from the gold mines and lumber mines   2% x 10....20%

Question , is this a bug...?   Can something be done so that people who upgrade to level 24 lighthouse get the extra 20% bonus?

Please can you look into this problem game development team. It cost a lot of etchings to do the upgrade.