2.5.3 Preview and Shortcut Buttons in List View
In module lists, the Preview button has been introduced on the left side of each row. This button opens a half-page panel, allowing you to view a preview of the record and also update it by pressing the Edit button. It is possible to restore the previous behavior by changing the properties layout.listview.preview and layout.listview.fast_edit.
Record preview display directly in list view