Moderation Question

So I've noticed when users sets their context to hidden, when searching content by "Hidden" it return 0 results despite the Manage Block stating that there is hidden content.

If no results are to be found when searching by "Hidden", how are moderators suppose go about this process?

As an example, when the Photos section under the Manage Block states there's X amount of items hidden, if you click into the Administration Photos page, and search by hidden, nothing is shown. If this is intended, what's the point of having this as a searchable toggle?