I've started to design the Entrance Area of my new Breeding Center for Orangutans and decided to build Concrete Ponds on both Sides of the Entrance. I was able to fill one with Water and lower the Barrier to 1m (I hope they'll work on fixing it that the Barrier currently needs to be higher to be able to fill it with Water) but I can't lower the Barrier of the Pond on the other Side after I've filled it with Water. Does anyone know what could be the Reason and how I can solve it?