NumberFormatException in log when displaying articles in Asset Publisher

• Type: Regression Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.2.X EE
• Fix Version/s: 6.2.4 CE GA5, 6.2.X EE
• Component/s: WCM, WCM > Publication, WCM > Publication > Asset Publisher
• Labels:
  • liferay-fixpack-portal-63-6210
• Branch Version/s:
  6.2.x
• Backported to Branch:
  Committed
• Story Points: 6
• Fix Priority: 2
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal-ee/pull/10793

Steps to reproduce:
1. Create a Web Content Structure with a Text field.
2. Create a template for this structure
3. Create a Web Content based on the new structure
4. Go to Admin -> Configuration -> Application Display Templates -> Add -> Asset Publisher Template
5. Create an Asset Publisher Application Display Templates, with the source in the attached AP_template.ftl.
6. Place an Asset Publisher on a page, and configure it to use the recently created Application Display Templates.
Result: the Asset Publisher portlet the article correctly, but in console a NumberFormatException is thrown.