Selecting Structure to associate to a Template throws UI error and doesn't work

• Type: Regression Bug
• Status: Closed
• Resolution: No Longer Reproducible
• Affects Version/s: 7.0.0 M6
• Fix Version/s: 7.0.0 M7
• Component/s: Dynamic Data Mapping, Dynamic Data Mapping > Template Editor
• Labels: None
• Fix Priority: 4

Steps to reproduce:

1. Navigate to Admin > Content > Web Content > Manage > Structures
2. Click Manage > Templates > Add
3. Begin adding a Template
4. Click to Select a Structure for the Template
   • Select one

Expected result:
Users can Select any Structure to associate a Template to.

Actual result:
A UI error is thrown, saying "Your request failed to complete", and the portal navigates back to the Templates list