re: My single quote is the octal character 039, not octal 096 which I think you are referring to as a fancy quote”.
If you change the quote to a straight quote, that key right beside the enter key, it’ll be fine.
I’m referring them as fancy quotes because they are often called that in the WP world. Why I do not really know.
If this issue is on the site you’ve listed in your replies, it seems there are issues on several pages with shortcode. Example, quotes and columns. So the update to WP 4.4 affected other instances of other shortcodes on the site.
re: The product is having a compatibility issue with WP 4.4.
As mentioned WordPress has been tightening up its shortcode API. It is less tolerant of errors which make it more secure. The WordPress shortcode parser never supported “fancy quotes” but was tolerant of them. In WP 4.4, they will prevent the shortcode from running. Thousands have updated and have zero issues, only a few who have errors in there shortcode have run into trouble with their directory not showing. If you would change the quotes that should fix this issue.
Hope that helps and brings this to a close.