Columns not working properly on live site

Thank you for the clarification @Louis.

As the Preview feature is a core WordPress feature that many people likely use without thinking about it, this is information that a lot of users will benefit from knowing about.

Perhaps a disclaimer in the documentation or a popup on first use with Cwicly installed?

If not using the Preview button, with Cwicly, what is the recommended approach for previewing new development changes on a live site prior to publishing?