When you go through menu or sitemap to the page tagged "Page to change password", you get an error message :
"An error occurred while changing your password. Please try again later or contact the site administrator. - See more at: http://demo.ametys.org/en/your-account/change-my-password.html#sthash.jh5qC3ok.dpuf"
This page is correct with mode lostpassword (link "I forgot my password" from the user signup page)
This mode should be activated by default
It works now on 3.6, but still not on 3.5.3