fix entity jumps were not send to opservers

FactoryCraft/Entity.cpp

@@ -1154,6 +1154,10 @@ void Entity::tick(const Dimension* zDimension, double seconds)
                 }
                 location.z -= moveDir.z;
             }
+            else
+            {
+                changed = 1;
+            }
         }
     }
     if (movementFlags & MovementFlags::GROUND_CONTACT)