I'm working as a partner to a corporate LibreOffice migration project. We've received positive feedback on the usefulness of the start centre document preview UI. A query has been raised however for a way to display this preview UI when LibreOffice is already running and the user wishes to open an additional document.
At present this is served by the "Recent Documents" drop-down list from within a running LibreOffice application, but the useful visual aspect of the start centre-style preview is obviously missing. Replacing or amending this list with the visual preview could be one approach.
Please let me know if you need additional information at all. I see this query has been raised before (https://ask.libreoffice.org/en/question/41105/libreoffice-already-running-how-to-see-preview-of-recent-documents-like-startup-screen/) but I'm not sure if it ever made it into an enhancement request.
This was requested previously in Bug 77590, so closing as a duplicate.
*** This bug has been marked as a duplicate of bug 77590 ***