shortcode not working on category pages

Hi ..
Hoping someone else has run into this problem. I’m using the search shortcode in the widget area of my website. It works great on everything but category pages. Any ideas?

It works here: http://www.veggiesbycandlelight.com/a-few-of-my-favorite-stories-posts/
It doesn’t work here: http://www.veggiesbycandlelight.com/?s=pancakes

Thanks!

https://ww.wp.xz.cn/plugins/search-shortcode/