Currently, if you have Terrain Tool docked with Object Properties there is no way to switch between them on a 1080p monitor. Terrain Tool is too tall. You can't see the tab for Terrain Tool and Object Properties at the bottom. If you open World Editor and then switch over to Terrain Tool you also lose the bottom status bar of World Editor because Terrain Tool kicks it off.

I think the Shoreline tools caused this. They should be moved to an Advanced Tab (or some other name) of the Terrain Tool where any other new Terrain tech buttons can also be added.