Error message main.title in the New UI CA PPM

Document ID : KB000099962
Last Modified Date : 05/07/2018
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Error message 'main.title' is displayed in the New UI.
All icons like home, projects etc are disabled. 
The message does not go away until browser cache is cleared. 

Steps to Replicate

-Enable New UI timesheets in Classic UI 
-Make sure Locale is set to "English(United States) 
-Create a menu link to New UI timesheets 
-Login to Classic and navigate to new UI timesheets 
-Edit the URL from http://<servername>/pm/#/timesheets/staff to http://<servername>/pm/# and hit Enter 
-Close the tab of the New UI and go back to classic 
-Navigate to New UI timesheets again 

Expected Results: The URL should expand to http://<servename>/pm/#/timesheets/staff and the same page should open 

Actual Results: The URL truncates to http://<servername>/pm/#/ and the page displays the following error : 

main.title error
All icons on the left like Home etc are disabled. 
CA PPM 15.2
This is a known Defect on 15.2 and is fixed on 15.3 and future releases. It is recommended to upgrade to 15.3.