Glasswire not logging data usage while on VPN

I noticed that while connected to PIA VPN, Glasswire for android is not logging data usage for any app in my device.

Phone: Hwawei P30 Pro (Android 9.0)
Glasswire Version: 2.0.324r

But if I disconnect to PIA VPN everything is back to normal. Is this the way it is?

Thanks

@Xetano_Yamazaki

GlassWire should count VPN data also, are you sure it’s not logged under the PIA app if you check the live graph? Lots of our customers use a VPN.

I have the same problem!