Inaccurate result from tf2 transform

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Platform: ubuntu 20.02 ROS2: Galactic, installed through 'apt'

ROS environment : ROS_VERSION=2 ROS_PYTHON_VERSION=3 ROS_LOCALHOST_ONLY=0 ROS_DISTRO=galactic

Problem:

Currently, I have a static tf2 transform between "map" and "planner" frame. The relationship is shown below.

$ ros2 run tf2_ros tf2_echo map planner
[INFO] [1688158439.517036056] [tf2_echo]: Waiting for transform map ->  planner: Invalid frame ID "map" passed to canTransform argument target_frame - frame does not exist
At time 0.0
- Translation: [0.000, -1.000, 0.000]
- Rotation: in Quaternion [0.000, 0.000, -0.383, 0.924]

Basically, the "planner" frame is offset from the "map" frame by 1 meter in the y-axis and -45 degree in yaw ( all in ros2 unit standard).

However, when I tried to use the tf_buffer to transform (-0.645, -0.705) in "map" frame to "planner" frame, I got

x -0.6646803743153546 y -0.2474873734152917

, which is not the answer I expected. Originally, I was expecting both x should be less than 0.5 meters from the origin in "planner" frame.

Because base on the x-y graph below (I have transformed the point from ROS standard to normal cartesian coordinate), I was expecting the |x-value| of "planner" frame is < 0.5 meters. , but it turned out to be -0.66468

code for doing the transform

def on_timer(self):
    # my_pose = Pose()


    # my_pose.position.x =  -0.745000
    # my_pose.position.y = -0.705000
    # my_pose.position.z = 0.0
    # my_pose.orientation.x = 0.0
    # my_pose.orientation.y = 0.0
    # my_pose.orientation.z = 0.0
    # my_pose.orientation.w = 1.0
    # testPose = PoseStamped()
    # testPose.pose = my_pose

    # testPose.header.frame_id = "map"
    # testPose.header.stamp = self.get_clock().now().to_msg()

    # resultPose = self.tf_buffer.transform(PoseStamped, "planner", rclpy.time.Time()  )
    # self.get_logger().info(" x " + str(resultPose.pose.position.x) + "y " + str(resultPose.pose.position.y))

    # Define the input pose in the source frame
    source_pose = PoseStamped()
    source_pose.header.frame_id = 'map'
    source_pose.pose.position.x = -0.645
    source_pose.pose.position.y = -0.705
    source_pose.pose.position.z = 0.0
    source_pose.pose.orientation.x = 0.0
    source_pose.pose.orientation.y = 0.0
    source_pose.pose.orientation.z = 0.0
    source_pose.pose.orientation.w = 1.0
    # q = quaternion_from_euler(0, 0, -45* (3.14/180))
    # source_pose.pose.orientation.x = q[0]
    # source_pose.pose.orientation.y = q[1]
    # source_pose.pose.orientation.z = q[2]
    # source_pose.pose.orientation.w = q[3]

    # Transform the pose to the target frame
    d = Duration()
    try:
        target_pose = self.tf_buffer.transform(source_pose, 'planner', d  )
        self.get_logger().info("Transformed pose: x  "+ str( target_pose.pose.position.x) +  " y " + str( target_pose.pose.position.y))
    except tf2_ros.TransformException as e:
        self.get_logger().error("Transform failed: %s", str(e))

Thus, I am wondering if this is a bug in the tf2? Or could I have misunderstood something?