ESP32 FFat fprintf garbage in text file

Question

At first I wrote sketch and it worked. File "info.txt" was created correctly. Then I tried to rewrite the sketch in the style File file = FFat.open(path); file.print(message) etc. But when I launched the sketch, unreadable garbage appeared in the text file, as if the file was written in some binary form.

I returned the old sketch, which seemed to work fine, but here it failed too.

The file is created, I get access to it via MSC.begin(partition->size / LBA_SIZE, LBA_SIZE) I can edit it, save it, everything works.

Failure:

1. I open the file in Windows. I save a random set of numbers in it. When I launch the sketch, I get the following result.

2. I delete the file. When I launch the sketch, it is created, but its contents completely correspond to the deleted one. That is, the numbers appear again as in the file that was destroyed.

---

ESP S3 Zero ESP32 Expressif Systems 3.2.0 Arduino IDE 2.3.5 Windows 10

void PrintInfo()
{
  FFat.begin(true);
  FILE* fp = fopen("/ffat/info.txt", "wt");
  
  if (fp != NULL) {
    fprintf(fp, "0.mp3 - Welcome\n");
    fprintf(fp, "1.mp3 - Timer\n");
    fprintf(fp, "2.mp3 - Notify\n");
    fprintf(fp, "3.mp3 - Warning\n");
    fprintf(fp, "4.mp3 - Parking\n");
    fprintf(fp, "5.mp3 - Reverse\n");
    fprintf(fp, "\n");

    fprintf(fp, "This drive has FAT16 system.\n");
    fprintf(fp, "Do not format this drive!\n");
    fprintf(fp, "Drive will be automatically\n");
    fprintf(fp, "formatted if an error occurs.\n");

    fflush(fp);
    fclose(fp);
  }

  FFat.end();
}

// USB CDC ON BOOT = ENABLED
// CPU FREQUENCY = 240MHZ
// CORE DEBUG LEVEL = NONE
// USB DFU ON BOOT = DISABLED
// ERASE ALL FLASH = DISABLED
// EVENTS RUN ON = CORE 1
// FLASH MODE = QIO 80MHZ
// ARDUINO RUN ON = CORE 1
// USB FIRMWARE MSC ON BOOT = ENABLED
// PARTITION SCHEME = NO OTA (1MB APP / 3MB FATFS)
// PSRAM = ENABLED
// UPLOAD MODE = USB-OTG CDC (TINY USB)
// UPLOAD SPEED = 921600
// USBMODE = USB-OTG (TINY USB)

What am I doing wrong? What am I not taking into account? I have a feeling that a new file is created on the old data area and picks up its old size.

I just need to destroy the old file and create a new one with text.