Visualiser RaceController:

event.consume() is required to stop the keyboard event from propogating to other controls.

racevisionGame/src/main/java/visualiser/Controllers/RaceController.java

@@ -102,6 +102,7 @@ public class RaceController extends Controller {
                 try {
                     controllerClient.sendKey(controlKey);
                     controlKey.onAction();  // Change key state if applicable
+                    event.consume();
                 } catch (IOException e) {
                     e.printStackTrace();
                 }