6.2.x - If SAML is enabled, clicking the Sign in link (top right) does not redirect to the IdP's login portlet

• Type: Regression Bug
• Status: Closed
• Resolution: Duplicate
• Affects Version/s: 6.2.0 CE B2
• Fix Version/s: 6.2.0 CE B3
• Component/s: Themes, Themes > Classic
• Labels: None
• Environment: Tomcat 7 + MySQL 5. Portal 6.2.x GIT ID: 6332966f9b77ac475d5c66d43665c1814b7135c8. ; Plugins 6.2.x EE GIT ID: 064d2aea4a19dcd618c447b2165c4420d618e3f7.
• Fix Priority: 5
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/13350

If SAML is enabled and that Liferay instance has been configured to the SP, clicking the Sign In button (top right) should redirect the user to the IdP instance's login portlet. This was originally fixed in LPS-36312 but broken by LPS-38297.

Steps taken:
1. Start two instances of Liferay,
2. Deploy the saml-portlet.
3. Configure one instance as an IdP and the other as an SP.

(http://www.liferay.com/about-us/newsroom/press-releases?p_p_auth=CNWW5yvx&p_p_id=101&p_p_lifecycle=0&p_p_state=maximized&p_p_mode=view&_101_struts_action=%2Fasset_publisher%2Fview_content&_101_assetEntryId=11250667&_101_type=document&redirect=http%3A%2F%2Fwww.liferay.com%2Fcommunity%2Fwelcome%2Fdashboard%3Fp_p_id%3D3%26p_p_lifecycle%3D0%26p_p_state%3Dmaximized%26p_p_mode%3Dview%26_3_keywords%3Dsaml%26_3_struts_action%3D%252Fsearch%252Fsearch)

4. Sign out of the SP instance.
5. Click the Sign In button at the top right on the SP instance.

Expected results:
User should see the IdP login portlet.

Actual results:
User sees the SP's login portlet.