Doclisting: last document is invisible when scrolling

See screenshot.
I was adding a lot of documents named 1,2,3,4,...., 23
When the list got too long and the scrollbar had to appear, it didn't - first, the latest document that I added was not visible in the list. When I added another one, the scrollbar appeared, and I could scroll to the previous one I added but not the one I just added.
Looks like an iterator stops too early

See screenshot - I added "23" which is open in the editor, but not visible in the doclisting. After re-ordering, it's visible but another document in the bottom drops off.