When I recently viewed my cv completeness page
http://careers.stackoverflow.com/cv/score/[user number]
I clicked on
http://careers.stackoverflow.com/cv/edit/[user number]#section-objectives
then I clicked cancel, however it didn't remove the #section-objectives
from the URL, which meant if I chose to refresh the page, the edit UI would become expanded again.
I think that cancel should also amend the URL, to prevent this (or bookmarked pages having this) problem.