src/de/steamwar/lobby/listener/PlayerSeatListener.java

@@ -111,8 +111,9 @@ public class PlayerSeatListener implements Listener {
     public void onEntityDismount(EntityDismountEvent event) {
         seats.remove(getSeatLocation(event.getDismounted().getLocation()));
 
-        if (event.getEntityType() != EntityType.ARROW)
+        if (event.getEntityType() != EntityType.ARROW || event.getEntityType() != EntityType.ENDER_PEARL) {
             return;
+        }
 
         event.getDismounted().remove();
     }