Unable to post blog entry with virtual hosting enabled

• Type: Regression Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.2.X EE, 7.0.0 Alpha 1
• Fix Version/s: 6.2.4 CE GA5, 6.2.X EE, 7.0.0 Alpha 1
• Component/s: Collaboration, Collaboration > Blogs
• Labels:
  • liferay-fixpack-portal-73-6210
• Branch Version/s:
  6.2.x
• Backported to Branch:
  Committed
• Story Points: 12
• Fix Priority: 3
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/29681

This issue is caused by LPS-56015

Steps to reproduce:

1. Navigate to Site Administration > Configuration > Site Settings > Site URL and enable virtual hosting for the default site's public pages. Then access the site through the virtual host.
2. Add the blogs portlet to a page.
3. Add a blog post and hit publish.

Expected Result:
A blog post would be added to the page.

Actual Result:
The page will refresh the blog portlet and say the post was successful but navigating back to the site will show no blog post has been added.

Reproduced on ee-6.2.x - b6c208d
Reproduced on master - 81d692e