OK, I just tried going in a different way, and my scheduled listings were showing.

I gave it a half dozen tries each way, and got the same results every time.

The result (at the moment) is that, if I click on "Scheduled listings" in the body of the overview page, my listings don't show.

However, if I click on "Scheduled" from the drop down under "Listings" at the top of the page, they are showing.

I have no idea what the problem is, but that seems to be working for me at the moment.