Serial Plotter: first label is empty if there is a new line after the labels

[sandeepmistry]

When using the following sketch:

void setup() {
  Serial.begin(9600);
  while (!Serial);

  Serial.println("aX,aY,aZ");
  Serial.println(); // <-- without this line the labels are fine
}

void loop() {
  Serial.print("0,0,0");
  Serial.println();

  delay(1000);
}

The aX label is lost in the Serial plotter:

If the Serial.println(); line in setup is removed, all is good.

[sandeepmistry]

Update: if an empty line is present in loop() via Serial.println(); the first label also disappears.