Custom field value is both null and not-null (?)

[andreasciamanna]

I'm querying an issue by ID and with some fields and custom fields.

When I look for a field by name, I can get the entity (in this case, an instance of SimpleProjectCustomField):

As you can see, the field's properties are duplicated.
In the case of Value, it's once set as null and the other time with the actual correct value.

When reading the value, I always get the null one.

[andreasciamanna]

I worked around the issue casting the field to SimpleIssueCustomField (e.g. ((SimpleIssueCustomField)employeeName)).

I'm unsure as to why this is necessary though.