I've had issues with fence meshes/chain links etc just simply not being visible. They're too flat and the anti-aliasing can't handle them and it seems to result in them just being invisible unless viewed at the perfect angle from the perfect distance. I hope they can remodel these so they work better. This was an issue in Planet Coaster 1 and Planet Zoo. I just don't think they can figure out how to make a mesh fences work.
I've resorted to using the thick rope to make mesh fences for now.