In all user configuration pages, (/user/<user-id>/configure),  "User Defined Time Zone" always shows logged-in user's timezone instead of selected user's timezone.

An admin user can try to set a different timezone for any other user. Although it updates correctly in Jenkins,  the configuration page continues to show admin user's timezone.

 How to reproduce

• Need 2 users. (At least one with admin privilege)
• Log in as both users and change  "User Defined Time Zone" to two different values.
• As the admin user,  go to the other user's configuration page.  It shows admin user's  timezone, instead of selected  user's.
• Try to change the selected users' timezone to a different value.  Apply configuration.  And refresh the page.  It again shows the admin user's timezone. 
  (Actually the configuration was correctly updates, which could verified by logging in as other user)