Panel page dropdown icons do not work

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.2.0 CE RC2
• Fix Version/s: 6.2.0 CE RC2
• Component/s: Frontend Infrastructure
• Labels: None
• Environment: Tomcat 7.0.40 + MySQL 5. Portal master GIT ID: 25c4ca3ad345929c90863ed10a49fd61b8042533.
• Fix Priority: 3
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/14225

Steps to reproduce:

1. Add a page of Panel type, and check the box for Collaboration
2. Navigate to the Page
3. Click the Collaboration dropdown icon

Expected results:
Clicking the icon should collapse the panel.

Actual results:
Clicking the icon does nothing.