Issue
When entering data into a Managed metadata control on any form, the drop-down menu of suggested items displays behind other form fields.
Resolution
Option 1
Upgrade Nintex Forms for SharePoint 2013 to the latest version.
Note: It will still be necessary to bring the Managed Metadata Control to the front, to ensure the returned suggestions are not overlapped by other controls.
Option 2
Use the following workaround:
- Open Forms in designer.
- Select the Managed Metadata control.
- Navigate to the ribbon from designer.
- From the top left corner select "Bring to front".
- Publish workflow.