I cannot reproduce what @AndyP mentioned, docking by beam or magnetic works for ship <-> ship and ship <-> station for me.
This bug is going back in queue for small issues though:
- `Cannot dock here! Reason: Can only dock with a ship that is not docked itself!` appears if you **beam dock** (use the raildocker beam) on a **ship**'s rail. This doesn't appear for station docking or magnetic docking.
- `Can dock again in X sec` appears after docking, not sure if this intended since it's something that should be shown when you **undock**.