rqt_console shows the same message twice? [closed]

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Hi all, I have a problem about the rqt_console specifically in the bag files. When I open a bag file typing rosbag play test.bag, rqt_console starts showing the all messages streaming in the bag file. Btw, I want to see the DEBUG messages in the bag file. In order to do that, I changed the logger level of the talker_node before the time I started rosbag record -a. With this conditions, when I open the bag file, rqt_console shows the same message twice. And it's a bit annoying while debugging. I give the related code(talker_node) and rqt_console screen below for you to observe better. I see this problem only watching bag files. How can I solve this problem? Or where I make wrong? ROS1 Kinetic Ubuntu 16.04 Related Code:

   int count = 0;
   while (ros::ok()) // Keep spinning loop until user presses Ctrl+C
   {
      //create a new String ROS message.
      //Message definition in this link http://docs.ros.org/api/std_msgs/html/msg/String.html
      std_msgs::String msg;

      //create a string for the data
      std::stringstream ss;
      ss << "Hello World " << count;
      //assign the string data to ROS message data field
      msg.data = ss.str();

      //print the content of the message in the terminal
      ROS_INFO("[Talker - INFO] I published %s\n", msg.data.c_str());
      ROS_DEBUG("[Talker - DEBUG] I published %s\n", msg.data.c_str());

      //Publish the message
      chatter_publisher.publish(msg);
      count++;
      loop_rate.sleep(); 
   }

Picture of the problem: