WAN interfaces not displayed when trying to add traffic shaping queue

[Tendril]

When I go to the "Firewall / Traffic Shaper / By Interface" page, neither of my 1Gb (ethernet) WAN connections are shown. So, I can't add a queue to perform any QOS on those interfaces.

I see a list of x7 other interfaces, including VPNs and various other VLANs.

I'm on 2.4.5-RELEASE-p1 on a Netgate SG-5100 appliance.

<confused>