Can’t Preview Draft Post

Hello again! A client is reporting (and I’ve confirmed) that she can’t preview posts that are scheduled or drafted as long as this plugin is activated. If you click “preview post” it takes you to the root and the URL doesn’t show up when you hover over it, just the ?preview= part which goes to the root. When you deactivate your plugin, this corrects. Any fix for this in the works at all? ?? Thank you!