Choose button not displayed on Templates iFrame

• Type: Regression Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.0 M6
• Fix Version/s: 7.0.0 Alpha 1
• Component/s: Dynamic Data Mapping
• Labels: None
• Fix Priority: 4
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/29578

Choose button is not displayed on Templates iFrame when new structure is created for the template

To reproduce:
1. Navigate to Administration/Web Content
2. Click on Add/Basic Web Content
3. Select the Choose button next to Template: Basic Web Content
4. On Templates iFrame click on Add
5. Fill in name field and click on Select button to select Structure
6. On Structures iFrame click on Add
7. Fill in name field and select a field then click on Save
8. On Structures iFrame select the newly created structure via Choose button

Actual Result:
Choose button is not displayed on the Templates iFrame for the newly created item.

Expected:
Newly created item to be listed on Templates iFrame and Choose button to be displayed