Link quality indicator (LQI) range not working

The Link quality indicator (LQI) part of the zigbee mapping indicates 147 (for a SNZB-04 door switch) while on the device parameter the RSSI is ‘weak’, so weak the device is out of reach & doesn’t trigger any event (I refreshed the LQI mapping in case the question is asked).
Any idea why the LQI is not indicating the correct value: '0".