Problem

Currently, if a user configured fields on a particular issue type (Task, Bug, Story, Epic), the next time that user opens that same issue type those same fields stay configured as "Custom". For example, If a Task issue was created with configured fields, the next time a Task issue is created it would have those same fields still displayed. Same thing for a Bug, Story, Epic and so on. Note: What you configure in a Task wont be configured in a Bug.

Each project the user has access to has their own set of issue types. The Task issue configured fields in one project will not carry over to a second project. The second project would save the configured fields for the Task issue type belonging to it. Thus, every time the user opens a Task issue in second project the configured fields remain the same for the Task issues. Just like the first project.

Suggestion

Add an option on User Defaults for the admin to select if users will see Custom or All fields when creating a ticket.