That’s the first time I’ve seen that happen. Most likely an HTML issue….or even a conflicting plugin. If you can create a Temporary User/Password, then I can login and take a look at what and where the issue is coming from.
Ok there’s no issues with the Theme, you just had a plugin installed and it was set to the wrong settings. It was the Layout Extras plugin. The homepage layout was supposed to be set as Full Width instead of content-sidebar. It’s fixed now.