Search tool only displays first page of multi-page results

Search Rules:
The keywords or titles of PDF files
Search for “shot”
Displaying results 1 to 10 out of 31
Page 1
Page 2
Page 3
Page 4
Next >
But If I select (click) Page 1 or 2 or 3 or 4, it returns no results; it displays a new blank Search page