Also, once you drag out a tab, you cannot add that tab back to the same or another File Explorer window. If you will try to do so, it will re-open in a new File Explorer window only.

A hidden feature in the latest Insider build of Windows 11 adds a much-requested feature to File Explorer.

The latest Windows 11 build from the Dev Channel contains much-needed improvements for File Explorer's tabs. It is now significantly easier to move and drag out tabs between different windows.