draw numbers on TFT has sometimes ghost-letters on the beginn and/or the end of the line

[Loetnase]

Look for the picture over the red marks.

I have testet different types of draw, all have the same problem,
i would like use the three drawRightString, drawCenterString and drawString.
But i got this ghost-letters on the beginn and/or the end of the line.
This .ino is running on a ESP32 with ILI9341 320x240, TFT_eSPI is the newest 2.5.43
The Arduino IDE is the new 2.3.2
Do i make there a mistake or can that be a bug in the TFT_eSPI.

In the next post is the Software with ther you can see my problem live.

Thank you for your help.

[Loetnase]

// https://github.com/Bodmer/TFT_eSPI
// This .ino is running on a ESP32 with ILI9341 320x240
// TFT_eSPI is the newest 2.5.43

#include <TFT_eSPI.h> // Hardware Bibliothek von Bodmer mit ILI9341 mit 240 x 320 Pixel

TFT_eSPI tft = TFT_eSPI();
float value = 0;
float d = 270;

void setup() {

// backlight for the TFT on my System GPIO15, your System maybe use an differen GPIO
pinMode(15, OUTPUT);
digitalWrite(15, LOW);

tft.init();
tft.setRotation(0); // rotation set 0-3 = 0-270 Grad
tft.fillScreen(TFT_RED);
}

void loop() {
// Create a sine wave for testing
d += 0.9; // 0.1 = speed of the sine
if (d >= 360) d = 0;
value = 10250 * sin((d + 0) * 0.0174532925);

tft.setTextColor(TFT_WHITE, TFT_BLACK, 0); //TFT Text Color WHITE on BLACK
char buf[8];
dtostrf(value, 5, 0, buf); // float value to string buf

tft.drawString(buf, 60, 5, 1);
tft.drawCentreString(buf, 120, 5, 1);
tft.drawRightString(buf, 180, 5, 1);
tft.drawCentreString("drawString, CentreString, RightString", 120, 20, 2);
tft.drawString(buf, 40, 40, 2);
tft.drawCentreString(buf, 120, 40, 2);
tft.drawRightString(buf, 200, 40, 2);
tft.drawCentreString("tft.drawString(buf)", 120, 60, 2);
tft.drawString(buf, 120, 80, 4);
tft.drawCentreString("drawCentreString(buf)", 120, 110, 2);
tft.drawCentreString(buf, 120, 130, 4);
tft.drawCentreString("tft.drawRightString", 120, 160, 2);
tft.drawRightString(buf, 120, 180, 4);
tft.drawCentreString("tft.drawFloat(value)", 120, 210, 2);
tft.drawFloat(value, 2, 70, 230, 4);
tft.drawCentreString("tft.drawNumber(value)", 120, 260, 2);
tft.drawNumber(value, 80, 280, 4);
}