[Python] Pyjnius didn't find class "org.kivy.android.GenericBroadcastReceiver" when using...

I'm developing an app which picks up Bluetooth devices using Device Discovery, specifically the function uses Broadcast Receiver. To speed things up I wanted to thread that function to make it faster and to not lag the UI in Kivy which happens on a MainThread. I've been stuck on this for a while and I'm running out of patience. I'm not really new to Python but this is my first real big project. I don't understand Java but I can get an idea.

def example(self, *args):
# [...] code

from android.broadcast import BroadcastReceiver
self.broadcast_receiver = BroadcastReceiver(self.bluetooth_devices, actions=[self.BluetoothDevice.ACTION_FOUND])
self.broadcast_receiver.start()

# [...] more code
self.broadcast_receiver.stop()

def bluetooth_devices(self, context, intent):
device = cast(self.BluetoothDevice, intent.getParcelableExtra(self.BluetoothDevice.EXTRA_DEVICE))

# [...] code that finds detected devices


I know for a definite the callback in BroadcastReceiver is not the problem, because it runs fine when function example is not Threaded. However, minute we put it into a Thread it throws this exception:

JVM exception occurred: Didn't find class
"org.kivy.android.GenericBroadcastReceiver" on path: DexPathList[[directory "."],
nativeLibraryDirectories=[/system/lib64,
/system/lib64]]
java.lang.ClassNotFoundException


From my understanding this must mean that when function consisting of BroadcastReceiver is threaded it potentially loses access to the class it needs to access to start. If so, is there a solution for this?

I'm also aware that BroadcastReceiver has HandlerThread.

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