change the context path cause exception

• 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: Environments, Environments > App Servers, Frontend Infrastructure > Module Loading
• Labels:
  • liferay-fixpack-platform-26-6210
  • liferay-fixpack-platform-29-6130
• Branch Version/s:
  6.2.x, 6.1.x
• Backported to Branch:
  Committed
• Story Points: 4
• Fix Priority: 4
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/20014

change the context path in case of tomcat are as follows:
Step 1> Goto $

{LIFERAY_HOME}

\tomcat-7.0.42\webapps.
Step 2> Rename the ROOT directory to mynewcontext.
Step 3> Goto ${LIFERAY_HOME}
\tomcat-7.0.42\conf\Catalina\localhost.
Step 4> Rename the ROOT.xml to mynewcontext.xml.
Step 5> Restart the server.
Step 6> login in using url: "localhost:8080/mynewcontext/"

Expected Result:can login in portal:
Actually Result:cause exception:

03:44:20,751 ERROR [http-bio-8080-exec-7][StripFilter:83] java.lang.StringIndexOutOfBoundsException: String index out of range: -2