NFC doesn't work any longer

REPRODUCIBILITY (% or how often): 100%
BUILD ID = OS VERSION (Settings > About product): 4.4.0.58
HARDWARE (XA2, X10, X10 II, …): XA2 Plus
UI LANGUAGE: French
REGRESSION: (compared to previous public release: Yes, No, ?): Yes

DESCRIPTION:

Nfc activated in settings, no reaction when near nfc tag.

PRECONDITIONS:

Activate Nfc in settings

STEPS TO REPRODUCE:

  1. Put a nfc tag near the nfc reader

EXPECTED RESULT:

Phone vibrates

ACTUAL RESULT:

None

ADDITIONAL INFORMATION:

(Please ALWAYS attach relevant data such as logs, screenshots, etc.)
In ncf logger : conitnuous flow of messages:

nci: Notification 0x01/0x23 is ignored in RFST_DISCOVERY state
binder: android.hardware.nfc@1.0::INfcClientCallback 2 sendData
data, 3 bytes(s)
61 23 00 a#.

Could you send more data provided by the app NFC Logger (available on Storeman)?

After reboot, these messages have disappeared and NFC works again.