Problems with powerOFF() (Guru Meditation)

[option]

Even with the simple PowerOFF example included I get a Guru when I try to shut it down, resulting in automatic restart.
Same result if I run it on USB, the M5 (red) battery module or the Go Battery module.

Any suggestions?

Module: Core Basic
Error:
Guru Meditation Error: Core 1 panic'ed (LoadProhibited). Exception was unhandled.
Core 1 register dump:
PC : 0x400e2c28 PS : 0x00060130 A0 : 0x800d3786 A1 : 0x3ffb1f30
A2 : 0x00000000 A3 : 0x3ffbf75c A4 : 0x00000001 A5 : 0x0000001d
A6 : 0x00000000 A7 : 0x3ffb0060 A8 : 0x800e2e02 A9 : 0x3ffb1f10
A10 : 0x00000014 A11 : 0x0000001d A12 : 0x00000001 A13 : 0x00000007
A14 : 0x00000020 A15 : 0x3ffb0060 SAR : 0x00000005 EXCCAUSE: 0x0000001c
EXCVADDR: 0x00000134 LBEG : 0x4000c2e0 LEND : 0x4000c2f6 LCOUNT : 0x00000000

Backtrace: 0x400e2c28:0x3ffb1f30 0x400d3783:0x3ffb1f60 0x400d1136:0x3ffb1f90 0x400d7e5d:0x3ffb1fb0 0x40089819:0x3ffb1fd0

Rebooting...

[m5stack]

could you paste your code to here.

[option]

I use the included PowerOFF example.
Deepsleep works fine.

Here it is, I use it unmodified.
As soon as I push btn A it reboots with the guru error.

#include <M5Stack.h>

// the setup routine runs once when M5Stack starts up
void setup(){

// initialize the M5Stack object
M5.begin();

/*
Power chip connected to gpio21, gpio22, I2C device
Set battery charging voltage and current
If used battery, please call this function in your project
*/
M5.Power.begin();

// Lcd display
M5.Lcd.println("This is software power off demo");
M5.Lcd.println("Press the button A to power off.");
}

// the loop routine runs over and over again forever
void loop() {

if(M5.BtnA.wasPressed()) {
M5.Power.powerOFF();
}

M5.update();
}

[m5stack]

@option pls check the lib version is latest. and confirm the board select m5stack -core