Editing the menu clears whole cache

The topic-title says it all. When i change the menu and save it, it clears the whole cache of the site what is a problem…

Also on this topic:
http://ww.wp.xz.cn/support/topic/plugin-wp-super-cache-nav-menu-update-clears-all-blog-cache?replies=6

I saw somebody with the same problem 1 year ago and was helped with the dev-version. But i think it never reached the production-version?

http://ww.wp.xz.cn/plugins/wp-super-cache/