HID device redirected with RDP RemoteFX does not appear at Winlogon desktop

Hello, 

I have successfully setup HID device (U2F keys) redirection with RemoteFX to Windows 2019 Terminal Server (on premise) - https://docs.microsoft.com/en-us/troubleshoot/windows-client/remote/usb-devices-unavailable-remotefx-usb-redirection

I have used a device GUID "{745a17a0-74d3-11d0-b6fe-00a0c90f57da}". 

And devices appear successfully when user gets into desktop, so desktop application may access the HID device successfully .

Problem: HID device does not appear/listed on HID hardware list , while RDP session is still on Winlogon desktop state. I have developed Credential Provider that needs to interact with such redirected U2F device to continue user login into desktop session. Is there a solution for this problem?

Is there a registry setting or other API for RemoteFX  RDP to enable earlier device redirection, during Winlogon desktop state ? 

Thanks!