I have a stationary Windows computer with Bluetooth and a laptop with WCL Bluetooth 7.8.7 installed.
I run the BluetoothManager demo program on my laptop.
With my Radio opened and devices discovered, I select my stationary Windows computer.
I then click on the RSSI button to get the signal strength.
As I walk around my house, I continue to check the RSSI value. It never changes, regardless of my distance to the stationary computer.
Eventually the call to get the RSSI will fail because the laptop is actually too far away from the stationary computer that the signal is gone - even though the reported value is still the initial perfect strength when the 2 devices were right next to each other.