Footer format changed on category pages

Theme – Bookrev Lite 1.6.2
Website – https://www.littlestbookshelf.com

What I’m finding is that when I visit a category page my footer either disappears when visiting a post within that category page and is replaced by an option to view another post or the layout messes up when simply visiting the category page without going into a post.

An example of the layout messing up is https://www.littlestbookshelf.com/category/reviews/
My page widget lists the pages vertically instead of horizontally. Also the Recent Posts widget is acting up.

An example of the footer vanishing is
https://www.littlestbookshelf.com/little-hoot-by-amy-krouse-rosenthal/
The only option is to visit the next post. My footer has vanished.

Any help you guys could offer would be greatly appreciated. Thanks again for your time.

ps- Also my home page displays my featured images without a comment count and the proper resolution (not stretched). However, on the category page my featured image is stretched and the comment count is back.