System update traffic not showing up on network monitoring

I’m using the latest Bazzite with Gnome desktop, and my question is related to updating and network performance monitoring.

I was on a decent wifi network a few days ago. When I first started the machine, it had really terrible network performance. I even ran a few speed tests and it was getting sub 1 mbps. So, I thought that was weird. When I checked the network monitoring the amount of up/down bandwidth was really low. However, the amount of data received was huge. As in quickly going up to over 3.4 Gb.

This tells me that somehow the system monitor (mission control I think it is called on this distro) was failing to account for the system update that was downloading - but was counting it toward total data.

Is this intended behavior, or a bug?

Thanks in Advance

Can you try using other monitoring software to see if it also has this issue?
For example

or