I'm not sure how the User History is sorted initially but it is not chronological, at least. The default for Enhanced is reverse chronological.
Additionally the Back button will not immediately take you out of User History if you've been changing pages in the User History. It will instead just take you back a page until you return to the initial viewing of User History and then finally it will take you back.
Additionally the Back button will not immediately take you out of User History if you've been changing pages in the User History. It will instead just take you back a page until you return to the initial viewing of User History and then finally it will take you back.