Missing search suggestion widget on attachment Properties page makes it hard to move pages; no page search suggestions, and error messages are invisible

When attempting to move an attachment from one page to another (via Tools-> Attachments -> (filename) -> Properties), the search widget that used to exist (for helping to find the name of the target page) is no longer visible in at least Confluence 5.0.1+.

Specifically, in the "Page" field on the Properties page, there is no longer any auto-suggest feature or "magnifying glass" search tool for finding target pages. One needs to know and enter the exact page name of the target page in order to move an attachment there.

If you enter an incorrect page name, you will be presented with a solid red "error" box (which can be found to be hiding the underlying red-on-red error message by selecting the text with the cursor, as seen in the screenshot).

This also makes it practically impossible to move an attachment to a blog post, since the "path" to a blog post is not particularly obvious, and entering just the title of the blog post does not work.