Using passkeys via iOS device QR code scanning

doxxxicle

I'm trying to login to the Apple Account website with Vivaldi on Garuda Linux (Arch-based), using the passkey stored on my iPhone. This is done by scanning a QR code on my PC screen with my phone's camera and then the phone talks to the PC via Bluetooth (the CABLE method?). This works fine with Vivaldi on Windows, but does not work on Linux.

In the Vivaldi device log, I see this:

FIDOEvent[11:15:10] UI step: kClosed

BluetoothEvent[11:15:10] Unregistering pairing agent

BluetoothEvent[11:15:10] Discovering changed: 0

BluetoothEvent[11:15:10] Adapter powered off

BluetoothEvent[11:15:10] /org/bluez/hci0: adapter removed.

BluetoothEvent[11:15:10] BluetoothAdapterBlueZ::Shutdown

BluetoothEvent[11:15:10] StopScan

... GATT spam ...

FIDODebug[11:14:16] 0000FFF900001000800000805F9B34FB

FIDODebug[11:14:16] UUIDs:

FIDODebug[11:14:16] Service data: <none>

FIDODebug[11:14:16] New caBLE device 55:3A:20:4F:A3:30:

... GATT spam ...

FIDODebug[11:14:10] AdapterDiscoveringChanged() is_scanning=1

BluetoothEvent[11:14:10] Discovering changed: 1

FIDODebug[11:14:10] Discovery session started.

BluetoothEvent[11:14:10] OnStartDiscovery

BluetoothEvent[11:14:10] OnSetDiscoveryFilter

BluetoothEvent[11:14:10] StartScanWithFilter

BluetoothEvent[11:14:10] FIDO initiating Bluetooth discovery session

FIDOEvent[11:14:10] UI step: kCableV2QRCode

FIDODebug[11:14:10] BLE adapter address 00:15:83:FA:AB:4F

FIDODebug[11:14:10] Bluetooth status: On

BluetoothEvent[11:14:10] Adapter powered on

BluetoothEvent[11:14:10] /org/bluez/hci0: using adapter.

BluetoothEvent[11:14:10] BlueZ Adapters available: 1

BluetoothEvent[11:14:10] BlueZ Adapter Initialized.

FIDOEvent[11:14:10] Starting GetAssertion flow: { "allowCredentials": [ { "id": "<CUT>", "transports": [ "hybrid", "internal" ], "type": "public-key" } ], "challenge": "<CUT>", "extensions": { "largeBlob": { "read": true } }, "rpId": "apple.com", "userVerification": "preferred" }

FIDODebug[11:14:10] Found 0 caBLEv2 devices

FIDOEvent[11:14:10] Enclave authenticator disabled because no suitable account

But nothing more after that.

Any idea if there's something I can do to make this work or does the Vivaldi team need to implement something to make it work?