DeviceUnavailable callback never called

[trzy]

Hi,

I'm never seeing the DeviceUnavailable callback called under any circumstance (even long after a device has been turned off during a session). Is this a known issue?

I'm trying to think of a workaround and all I can think of are:

1. Test each result (I'm looking for my own device, so I can attempt a connection and handshake to verify it is actually there).
2. Call SearchAsync() repeatedly in a loop and each time, assemble a new set of results to replace the old ones and manually detect devices that have dropped out.

Thanks,

Bart