Canceled dock make fishing spot dissapear exploit

I had no idea what our opponent was doing until it was too late. Canceling a dock will make the fishing spot disappear and thus blocking thousands of resources. Is this intended and part of a new meta now?

Thank you for the report @forexjammer! Sorry you’re running into this. We are tracking and monitoring, but haven’t seen it crop up too often. Please continue to report if you see this happen in game.

Maybe by make building unable to build on shore fish but group shore fish together to have space to build dock?