Incorrect Label persists on the Legend even after the message is no longer in the Plotter

[nmzaheer]

Describe the problem

Incorrect Label persist even after the message has changed

To reproduce

Equipment

• Arduino board

Steps

1. Upload the following sketch to your Arduino board

int random_variable;
int static_variable = 500;

void setup() {
  Serial.begin(9600);
}

void loop() {
  random_variable = random(0, 1000);

  Serial.print("Variable 1:");
  Serial.print(random_variable);
  Serial.print(",");
  Serial.print("Variable 2:");
  Serial.println(static_variable);
}

2. Open Serial Plottel
3. Ensure the baud rate is set to 9600 baud
4. With the Serial Plotter open to the side, now modify the sketch to the following

int random_variable;
int static_variable = 500;

void setup() {
  Serial.begin(9600);
}

void loop() {
  random_variable = random(0, 1000);

  Serial.print("Random:");
  Serial.print(random_variable);
  Serial.print(",");
  Serial.print("Static:");
  Serial.println(static_variable);
}

6. Upload the modified sketch to the Arduino board and observe the legend on the top corner of the Serial Plotter

Serial Plotter Output

Steps to reproduce - Video

ArduinoSerialPlotterLabel.Bug.mp4

Expected behavior

Arduino IDE version

Version: 2.0.0-rc9.4
Date: 2022-09-08T08:06:43.499Z
CLI Version: 0.27.1 [a900cfb2]

Operating system

Windows

Operating system version

Windows 10 21H2

Additional context

The Legend is updated and shown correctly when

• The Serial Plotter window is closed & reopened again OR
• The Plotter is STOP & RUN once