Options/Insert new items in their sorted positions

Explorer++

Tools/Options.../Insert new items in their sorted positions

System Default:   Yes

Explorer++ sorts items in the current Files pane (ie. tab)  when a Refresh is done, or when refreshing is done automatically by changing the column sorting, etc.  When new items are added to the tab by drag-and-drop, or by using the New item of the context (right-click) menu, newly added items are (by default) inserted in the correct location - folders at the top (or bottom, depending on the column header status), files in position by alphabetic order.  Disabling this option, however, causes all new items to be placed at the bottom the of current list.  This may be of benefit when editing folders, etc. and new files/folders can be determined at a glance.

Of course, automatic refresh (and sorting) is still done when column sorting is changed and at startup, etc.