It used to be that if one dragged a file/document from a folder or Desktop to another folder and held it over the latter folder until same highlighted, it would also open that folder so that one could place it where one wanted in the contents of the folder. Moreover, that procedure could be successively repeated if the folder contained other/embedded folders.

This no longer seems to be possible. I cannot find any preference setting which might allow this action (which was a default or SOP in OS 9).

Am I missing something?