Issue Summary

Can not upload attachments to wiki markup custom field when creating issue in new tab.

When creating a new issue by opening a new tab (rather than the modal popup), wiki editor custom field cannot be used to add attachments. The system attachment field or description fields can be used for this purpose, but not a custom field with wiki editor.

The custom field wiki editor has the attachments button disabled in the condition described above.

This is the Create Issue form in a new tab where the attachments button gets disabled in the custom field (Environment) wiki editor:

This is the Create Issue form in a modal popup where the attachments button is enabled in the custom field (Environment) wiki editor:

Steps to Reproduce

1. add a custom field with wiki editor to the create screen
2. Cmd+Click Create Issue will open the create form in a new tab
3. in the form, the custom field with wiki editor has the attachment button disabled
4. the system field with wiki editor has the attachment button enabled

Expected Results

The custom field with wiki editor has the attachment button enabled.

Actual Results

The custom field with wiki editor has the attachment button disabled.

Workaround

1. Use the modal popup to create new issues rather than a new tab.
2. Alternately, do not use a custom field description to replace the system field description