Extending below issue to the preview option from Sitecore V9.3 back officeSitecore V9.3 back office
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Whenever any item is previewed from back-office, it redirects to the desktop. If the same item is opened in the experience editor, it appears fine.
EDIT #1 AllEDIT #1
All the required content is already published in the web database. And the whole home root folder of the site is there.