DIfferent Image shows on mouseover and click the magnifying glass in posts_grid

Ken Ray asked 3 years ago

I’m using a post page inside
[posts_grid type=”post” columns=”3″ rows=”2″ order_by=”date” order=”DESC” thumb_width=”370″ thumb_height=”238″ meta=”no” excerpt_count=”0″ link=”no” ┬ácategory=”software” custom_class=”list_1″] I added a image (PDF Download) with a hyperlink to download a pdf.
The Image shows properly however when you mouse over and click the magnifying glass the PDF image shows up instead of the featured image.
How do I fix this?