Buttons in various portlets don't work on when setting virtual.hosts.valid.hosts property

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.2.X EE, 7.0.0 M3
• Fix Version/s: 6.1.X EE, 6.2.2 CE GA3 , 6.2.X EE, 7.0.0 M1
• Component/s: Frontend Infrastructure, Security Vulnerability
• Labels:
  • 6.1_release_notes
  • liferay-fixpack-administration-8-6210
  • liferay-fixpack-misc-7-6210
  • liferay-fixpack-platform-25-6210
  • liferay-fixpack-wcm-core-18-6210
• Branch Version/s:
  6.2.x, 6.1.x
• Backported to Branch:
  Committed
• Fix Priority: 4
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/20311

Steps to reproduce:

1. Set the following property to your ip address in portal.ext.properties:

   virtual.hosts.valid.hosts
   

2. Navigate to the portal instance through the ip address
3. Add a Wiki portlet to a page
4. Navigate to the "All Pages" tab of the wiki portlet
5. Tap on "Add Page"

Expected results:
The page should reload to the Add Page page

Actual results:
Tapping on the button does nothing. Also occurs on message boards buttons.

Tested on:
iPad (3rd Gen) + iOS 7.0.4 + Safari
ASUS Nexus 7 + Android 4.4.2 + Google Chrome 32

Additional information:
I inspected the element on the Android device and found that the html is actually different on the touch devices, and appears to have been generated incorrectly. On the mobile devices it appears as:

<button class="btn btn-default" href="null" id="_36_addPageButton" type="button"> Add Page </button>

On the desktop it appears as:

<a id="_36_addPageButton" href="http://localhost:7080/web/guest/wiki-page?p_p_id=36&amp;p_p_lifecycle=0&amp;p_p_state=normal&amp;p_p_mode=view&amp;p_p_col_id=column-1&amp;p_p_col_count=1&amp;_36_editTitle=1&amp;p_r_p_185834411_title=&amp;p_r_p_185834411_nodeId=10510&amp;_36_redirect=http%3A%2F%2Flocalhost%3A7080%2Fweb%2Fguest%2Fwiki-page%2F-%2Fwiki%2FMain%2Fall_pages&amp;_36_struts_action=%2Fwiki%2Fedit_page&amp;_36_type=all_pages" class="btn btn-default"> Add Page </a>