See this question.
It was asked yesterday, edited just now, which caused it to be bumped to the top of the list.
Usually when something is bumped there is an "Active: Today" link that I can click on to see what the latest change causing the bump was, but it doesn't appear for this question.
Is this by-design or is it a bug?
If it's by design, what other events bump but don't cause the "Active: Today" to show?
See below for an example of there an edit to the question with the Active Today linked to it (hovering over the link confirms it):