Users unable to access PPM Gantt from Modern UX Task Timeline when Classic PPM Access is disabled

Products

• Clarity PPM SaaS
• Clarity PPM On Premise

Issue/Introduction

End users are unable to access 'PPM Gantt' page from Modern UX 'Tasks - Timeline -Actions' dropdown list when 'Clarity PPM Access' to allow Classic PPM URL is disabled.
This results in 'Access Denied: Access to this application URL is no longer permitted. If you believe this is an error, please contact your administrator.'

Steps To Reproduce:

1. Login to Clarity Modern UX and navigate to -> 'Administration -> Actions -> Classic PPM Access' and uncheck the 'Enabled' checkbox
2. Go to a Project - Task - Timeline - Actions' dropdown and click on 'PPM Gantt'

Expected: 

The 'PPM Gantt' utilizes Classic technology and when the Administrator disables the access to Classic, this action should not be visible for the end-user in Clarity.

Actual:  

The 'PPM Gantt' action is still showing and when the user clicks on it an error is generated to deny access.

Environment

Clarity 16.4.1

Cause

DE189279

Resolution

Currently under review by Engineering