ESP32 MQTT publishes same message twice instead of two distinct messages to different topics

Question

I'm trying to send data over MQTT from an ESP32 to my computer. I have two distinct sets of data going to two topics, temperature and gravity. For some reason, it will only publish one message, but send it twice to the broker and its whatever message is published first. I'm not sure what I could be doing differently.

Arduino code:

int parseTilt(String DevData) {
  String DevUUID, DevColour, DevTempData, DevGravityData;
  int colourInt;
  float DevTemp, DevGravity;

  // Determine the Colour
  colourInt = DevData.substring(6, 7).toInt();

  switch (colourInt) {
    case 1:
      DevColour = "Red";
      break;
    case 2:
      DevColour = "Green";
      break;
    case 3:
      DevColour = "Black";
      break;
    case 4:
      DevColour = "Purple";
      break;
    case 5:
      DevColour = "Orange";
      break;
    case 6:
      DevColour = "Blue";
      break;
    case 7:
      DevColour = "Yellow";
      break;
    case 8:
      DevColour = "Pink";
      break;
  }

  if (repeatColour != 0 && repeatColour != colourInt) {
    Serial.print(DevColour);
    Serial.println(" Tilt is being ignored.");
    return 0;
  }

  //Generate the UUID
  DevUUID += DevData.substring(0, 8);
  DevUUID += "-";
  DevUUID += DevData.substring(8, 12);
  DevUUID += "-";
  DevUUID += DevData.substring(12, 16);
  DevUUID += "-";
  DevUUID += DevData.substring(16, 20);
  DevUUID += "-";
  DevUUID += DevData.substring(20, 32);


  // Get the temperature
  DevTempData = DevData.substring(32, 36);
  DevTemp = strtol(DevTempData.c_str(), NULL, 16); // Temp in Freedumb units

  // Get the gravity
  DevGravityData = DevData.substring(36, 40);
  DevGravity = strtol(DevGravityData.c_str() , NULL, 16);

  Serial.println("--------------------------------");
  Serial.print("Colour: ");
  Serial.println(DevColour);
  Serial.print("Temp: ");
  if (Celsius) {
     Serial.print((DevTemp-32.0) * (5.0/9.0));
     Serial.println(" C");
  }
  else {
    Serial.print(DevTemp);
    Serial.println(" F");
  }
  Serial.print("Gravity: ");
  float DevGravityFormatted = (DevGravity / 1000);
  Serial.println(DevGravityFormatted);
  Serial.println(DevGravityFormatted, 3);
  Serial.println(DevGravityFormatted);
  Serial.println(DevData);
  Serial.println(DevData.substring(0,32));
  Serial.println(DevUUID);
  Serial.println("--------------------------------");


  client.loop();
  Serial.println(DevGravity, 16);
  char tempGravity[16];
  dtostrf(DevGravity, 16, 3, tempGravity);
  char tempTemp[5];
  dtostrf(DevTemp, 5, 2, tempTemp);
  Serial.println("tempGravity");
  Serial.println(tempGravity);
  Serial.println("tempTemp");
  Serial.println(tempTemp);
  client.publish("fermentation/temperature", tempTemp);
  client.loop();
  delay(500);
  client.publish("fermentation/gravity",tempGravity);
  client.loop();
  Serial.println("published");

  return 2;
}

And the python code on my computer:

MQTT_SERVER = "192.168.1.69"
MQTT_PATH_1 = ('fermentation/gravity')
MQTT_PATH_2 = ('fermentation/temperature')


def on_connect(client, userdata, flags, rc):
    print('conncected, result: ' + str(rc))
    client.subscribe(MQTT_PATH_1)
    print('subscribed gravity')
    client.subscribe(MQTT_PATH_2)
    print('subscribed temperature')

def on_message(client, userdata, msg):
    temp = str(msg.payload).split("'")
    if msg.topic == MQTT_PATH_1:
        print('mqtt 1')
        print(msg.topic + ' ' + str(msg.payload))
    if msg.topic == MQTT_PATH_2:
        print('mqtt 2') 
        print(msg.topic + ' ' + str(msg.payload))
    else:
        print('else')
        print(msg.topic + ' ' + str(msg.payload))
    

client = mqtt.Client()
client.on_connect = on_connect
client.on_message = on_message
client.connect(MQTT_SERVER, 1883, 60)

client.loop_forever()

The output comes out to this: mqtt 2 fermentation/temperature b'75.00' mqtt 2 fermentation/temperature b'75.00'

Not sure what I'm doing wrong. Please excuse the arduino code, I'm a noob. It is adapted from this code: https://github.com/N3MIS15/ESP32-Tilt-Repeater/blob/master/ESP32-Tilt-Repeater.ino

Thanks for the help!