HID not working when flashed with OTA DFU

[paveljanecek]

Hello, I'm struggling with little problem. I'm trying to create HID device similar to mouse. I work with RedBear BLE nano V2. And for DFU I use this SoftDevice.

#include <SPI.h>
#include <BLEHIDPeripheral.h>
#include <BLEMouse.h>

#define BLE_REQ   6
#define BLE_RDY   7
#define BLE_RST   8

BLEHIDPeripheral bleHIDPeripheral = BLEHIDPeripheral(BLE_REQ, BLE_RDY, BLE_RST);
BLEMouse bleMouse;

void setup() {

  bleHIDPeripheral.clearBondStoreData();
  bleHIDPeripheral.setReportIdOffset(1);

  bleHIDPeripheral.setLocalName("mouse");
  bleHIDPeripheral.addHID(bleMouse);
  bleHIDPeripheral.begin();

}

void loop() {
   BLECentral central = bleHIDPeripheral.central();

  if (central) {

    while (bleHIDPeripheral.connected()) {

        bleMouse.move(100, -100, 0);
        delay (200);
        bleMouse.move(-100, 100, 0);
        delay (200);
    }
  }
}

The problem is, when flashed through DFU the app is working only up to the power is down, after restart the device fall dawn to DFUTarg mode. If I use this sketch through DAPLink, there is no problem. If I, for example, use another sketch which use Bluetooth UART communication, there is no problem.

Can someone help me please?