Field is not visible in form for few users

[davida973584943]

'Sub category' a custom field on the form view in hardware table is not visible to users who don't have 'y' role, even in list view although the 'sub category' has a value in it, it is showing blank for users who don't have 'y' role. i have checked ACLs, client scripts, ui policies, can someone help me in finding where it could be configured?

[Weird]

Is the field visible but not the value? If your custom field is a reference field then the ACL's on that referenced table apply to the values and user might not be able to see them.
Also have you made sure the extended table doesn't have an ACL for the custom field? ACL's can be inherited, so if for example there was an ACL for assignment_group on task level, it would apply to incident table if there's no separate ACL on incident table.