might be specifically when inside a FormField
<FormField name="username" label="Username:"}>
<TextBox iconCls="icon-man" inputId="username" />
</FormField>
<FormField name="password" label="Password:"}>
<PasswordBox iconCls="icon-lock" inputId="password" />
</FormField>
the resulting HTML has a generated ID, not the specified one.
my goal is to try to get the form to play nice with LastPass specifically, and other password managers if possible. this is one of the methods the password managers use to find what field to hook into.