RAK7249 FW1.3.6 RSSI always 2

After updating the gateways to V1.3.6 the RSSI is stuck at positive 2 for all uplink messages. The expected value for RSSI is negative and between -80 and -120dBm.

Screenshot from 2023-01-03 17-19-26

This is having a negative effect on ADR on TTN.