Steps to Reproduce:
1. Open zanata.
2. Click on login.
3. Click on forgot password and enter email/username
4. Click on activation link you received on firefox browser
5. Observe behaviour
1. Login to zanata as admin.
2. Go to admin page.
3. Manage users - Create new user
4. Enter username and email
5. Select role and save
6. you will get activation mail.
7. Click on activation link (Firefox)
8. Try to enter password
Able to enter password in reset password field
User is unable to set password
User seems to be activated without reset password if you see user list from admin - > manage users
Issue is not reproducible in Firefox 54.0
Attached screen captured.
Fefora26 + Firefox 55.0.1 64bit