NRF24 works strange with Espruino

Hi,
my NRF24 module adressed properly, sometimes works well, but sometimes goes to some strange state:
it clears all the registers to [0,0,0,0,0] himself, without any command like nrf.init from the Espruino, or other obvious reasons. It is impossible to change this state using nrf.init - adress doesn't change.
In this state module continue sending data on Air, but always saying nrf.sendString("someth") = "true", even if reciever switched off. It returns to normal state only after power off. What can be the problem with It?