Ticker Text demo question / maybe issue about ssd1306ascii HOT 5 CLOSED

  /**
   * @brief Advance ticker by one pixel.
   *
   * @param[in,out] state Ticker state.
   * @return Number of entries in text pointer queue.
   */
  int8_t tickerTick(TickerState* state);

// Simple Ticker demo for I2C 128x32 oled.
//
// oled.tickerTick() returns how many strings are queued to be displayed. You can add another string when the return value is less than TICKER_QUEUE_DIM by calling oled.tickerText().
//  When the return value is zero, all strings have been displayed.
//

#include <Wire.h>
#include "SSD1306Ascii.h"
#include "SSD1306AsciiWire.h"

#define I2C_ADDRESS 0x3C

SSD1306AsciiWire oled;

// Ticker display
#define RTN_CHECK   1   // Try values of zero or one for RTN_CHECK.
#define numberLoops 3
#define tickerRate 50   // milliseconds
TickerState state;      // Ticker state. Maintains text pointer queue and current ticker state.
const char* text[] = {
    "Prog:  blah blah v0.02    "   //  26 char  26 x (8 + 3) = 286, close to the 289 we counted in the number of "false" loops.
};    // this is an array of pointers to the text.
uint32_t tickTime = 0;
int n = 0;
// Ticker display end

//  Setup
void setup() {
    Serial.begin(115200);
    delay(1000);
    Wire.begin();
    Wire.setClock(400000L);
    oled.begin(&Adafruit128x32, I2C_ADDRESS);
    // Use <font>, field at row 2, mag2x, columns 16 through 100.
    oled.tickerInit(&state, ZevvPeep8x16, 2, false, 16, 100);
    oled.displayRemap (true);
    // Try this for full screen width with set1X.
    // oled.tickerInit(&state, Adafruit5x7, 2);
    oled.clear();
}

//----------------------------- Main

void loop() {
    if (tickTime <= millis()) {
        tickTime = millis() + tickerRate;

   // Should check for error. rtn < 0 indicates error, rtn of 0 indicates all strings have been displayed.
        uint8_t rtn = oled.tickerTick(&state);

        if (rtn == 0){
            Serial.println("                                         finished displaying all strings");
        }

        if (rtn <= RTN_CHECK) {     // rtb = false every loop except when 1st char of the message reaches the left edge
            // Should check for error. Return of false indicates error.
            oled.tickerText(&state, text[(n++)%3]);
            Serial.println(".........................rtn test true");
        }
        else{
            Serial.println("rtn test false  ");
            return;
        }
    }
}  // -- end loop --
//  -- eof --

 if (rtn <= RTN_CHECK) {     // rtb = false every loop except when 1st char of the message reaches the left edge
            // Should check for error. Return of false indicates error.
            oled.tickerText(&state, text[(n++)%3]);  <<------ Causes another copy of your string to be queued when rtn == 1.
            Serial.println(".........................rtn test true");
        } else{
            Serial.println("rtn test false  ");  <<----- This is not false it is more than one copy queued.
            return;
        }