It seems that the function to retrieve a new password (Forgotten your password?) is not working with Beta 4 on my local installation. I get an email with a new password as well as an activation link like mysite/featherbb/user/4/action/change_pass?key=XXXXXXXX, but the activation link returns a "Page not found". I've tested this on the official FeatherBB forum, and I had a similar problem here.
Indeed the url sent in the mail isn't valid (http://localhosthttp://localhost/user/2/action/change_pass?key=XXXXXXXX instead of http://localhost/user/2/action/change_pass?key=XXXXXXXX) and sends a "Page not found", but even after correcting this there will be another problem the targetted route is under a "is logged" middleware, which redirects to the login page if the user isn't logged. We'll have to allow to access this page for non-authed users in future releases.
Thanks again for your report !
[ Generated in 0.044162 seconds, 6 queries executed - Memory usage: 1.41 MiB (Peak: 1.45 MiB) ]