#include <M5Atom.h>

void setup(){
       M5.begin(true, false, true);    //Initialize M5Atom. 
       delay(50);   //Delayed 50ms. 
       M5.dis.fillpix(0xFFFFFF);
       delay(10000);
       M5.dis.clear();
}

void loop(){
}

I've got 24 leds on, the last one off , but if I change the
#define NUM_LEDS 25 to 26 in
.pio/libdeps/m5stack-atom/M5Atom/src/utility/LED_DisPlay.h
I've got 25 leds on
Is it a known bug in the atom lib?