[2022] Fertilizer silo in vanilla game

Hello,

I've purchased all the DLCs released until now. Game update 15 is installed.

I started a new Anno 1800 game with none of the DLCs activated.
When I reached the activation threshold for Seeds of Change DLC (first Obrero), fertilizer silo option was added to both old world and new world crop farms.

I believe this is a bug.
Since I do not have the Seeds of Change DLC activate for this playthrough, fertilizer silos should not be available.

Thank you,
Mati