When viewing an admin log with a fair bit of content, the dropdown page list
isn't updating based on which page you're on.
For example, if there are ~75 pages, the dropdown list contains something like
1-5, 35-40, and 70-75.
Selecting page 5 takes you to page 5, but the dropdown list doesn't update to
let you get to page 6 (or anything else other than the aforementioned pages)

To recreate:
Go to Site Admin > Admin Log (on an install with a history of activity)
On the dropdown Page menu, try to find a way to get to page 6.

Note: this was also an issue in CGExtensions but has since been fixed, so
perhaps the same code?