Error when trying to create an Issue via Jira-Issues-Macro (required fields)

Atlassian edit
If you use the insert JIRA Issue Macro to create an issue on a confluence page, it only takes the default required fields into account. If you have defined any other fields in your field configuration to be a required field, it will not show up in the macro. When trying to create the issue, the error message as described above will appear.

Original report

We have the following setup:

• Confluence 4.2.13
• Jira 5.2.2
• Greenhopper 6.1.0

Confluence and Jira are trusted applications.

When we try to create a new epic via the Jira-Issues-Macro we get the following error message:

With all other issue-types this works perfectly.
Now we discovered, that the field "Epic Name" is a custom-field from Greenhopper and is mandatory. But with the Jira-Issue-Macro you cannot create Issues with customized mandatory fields. Now, the point is that we have not customized the field "Epic-Name", this comes form the Greenhopper installation. And Greenhopper needs an value in this field to work properly.

The feature to be able to create JIRA-Issues out of Confluence is very important for our business-process and furthermore it would be nice if you can define mandatory fields as you like and they appear in Confluence in the Jira-Issue-Macro-Wizard.
Are there any workarounds for this bug?

greetings
Benjamin