Steps to follow to reproduce:
- Click on "Document Index" in "Quick Links"
- Click on the "Attachments" tab
- Filter attachments by page: write something in the field under "Page" (e.g. "an")
- Some of the filtered page results (e.g. "Style") don't contain the character sequence you have just provided.
Note the space name does contain the characters, however attachments were filtered by page.