What steps will reproduce the problem?
1. Click on "New" control
2. Leave all the fields empty
3. Click "create"
Expected result
There appears an pop-up window with as inquired and optional fields. After leaving the fields empty and clicking the "create" control there appeares a message about an error and the inquired fields are highlighted somehow (e.g. their frames become red)
Actual result
The pop-up window closes. A new user is not created
The same test was used for Google Chrome 30.0, Opera 17.0 and Internet explorer 9.0. The results are the same.