Custom field "milestone" is not appeared with the field is defined and defined milestones are removed

[Jun Omae]

Custom field is allow to use the same name of ticket field when no defined enums/components/milestones/versions. Actually, priority, version, component, resolution, severity and type fields is appeared in ticket box and form.

However, milestone field is not appeared in ticket form. The milestone is appeared in ticket view.

[ticket-custom]
priority = text
priority.format = plain
priority.label = (priority)
priority.options =
priority.order = 1
priority.value =
milestone = text
milestone.format = plain
milestone.label = (milestone)
milestone.options =
milestone.order = 2
milestone.value =
version = text
version.format = plain
version.label = (version)
version.options =
version.order = 3
version.value =
component = text
component.format = plain
component.label = (component)
component.options =
component.order = 4
component.value =
resolution = text
resolution.format = plain
resolution.label = (resolution)
resolution.options =
resolution.order = 5
resolution.value =
severity = text
severity.format = plain
severity.label = (severity)
severity.options =
severity.order = 6
severity.value =
type = text
type.format = plain
type.label = (type)
type.options =
type.order = 7
type.value =