Missing content with sidebars

I have just moved over to Hueman theme and love it but have a big problem. If I use one sidebar or two sidebars I cannot see any text content when a post is published, I can still see images but no text.
If I disable one of the sidebars I can just see the edge of the text.
If I disable both sidebars and make it full page then the written text content is fine.
I have tried disabling all of my plugins but still does not work.
Any ideas what this could be?