Hi, I've been having trouble in one of my gharial habitats, which has a river going around the outer edge of the habitat, and then cutting back up. So there's a large island in the center of the habitat, and a smaller piece of land at the bottom edge where I have a raised viewing platform for guests. In order to have the gharials come closer to guests I've placed a feeding station on that edge. However, the keepers can't reach it from across the river. I want to make a nice wooden bridge for the keepers, but I've tried building one with both climbing frame & roof/walking materials & they still don't seem to want to use it. They also don't seem to use rock paths either. Is this a bug, or am I just using the wrong pieces?