Dear Virk
I installed the "Elenor of Tsort" release (2016-06-26a) and the bootstrap3 template, too. I have one adminstrator account. All other users are members of the "user" group. They are able to change their password in both the bootstrap3 and the default template. I emptied the cache before each login.
logged in as admin
logged in as user
Greetings
Oliver