I haven't contacted support yet, as I wanted to wait to see if this sorts itself out.
Before I went out for a couple of hours this morning, I did some re-lists. I logged the number of listings that I had running and those closed to re-list in my spreadsheet, to keep track of my numbers.
When I came back home, I was going to relist some more things again and there are extras in my closed listings. Items that I had re-listed and deleted last night and this morning.
I rebooted my computer and the problem is still there.
So be careful with your closed listings / re-lists.