Tasks Grid shows ERR on the Grid when the Expandable Tree option is turned on

Products

• Clarity PPM SaaS
• Clarity PPM On Premise

Issue/Introduction

When the Show Expandable Tree Option is turned on in the View Options of the Copy Tasks Grid, no tasks are shown and the Grid shows a message "ERR".

The steps below refer to one specific use case.  The issue is reproduced when the Parent Task spans across two pages.  Therefore, the issue can also be reproduced when using filtering that causes the returned set of rows to have a Parent Task that spans across multiple pages. (For example: Filter for a Parent Task has more than 100 child tasks)

STEPS TO REPRODUCE:
1. Login to Modern UX.
2. Create a Project with 400+ tasks.
3. On the Timeline view of the tasks grid arrange the tasks so that we get at least 4-5 levels for a single task.
4. Navigate to Projects Grid and Open a project different from the project created in step 2.
5. Navigate to Tasks grid of the project and select Actions -> Copy From. Select the type as Project and search for the project created in Step 2.
6. Click on the next after selecting the project.
7. On the Copy Tasks From Grid, select view options and turn on "Show Expandable Tree" option.

Expected Results: Tasks should be shown in the Grid in a collapsed manner.
Actual Results: No Tasks are displayed and a "ERR" message is shown on the Grid.

 

Environment

Clarity PPM 16.3.3, 16.4.0

Cause

DE178071

Resolution

This is under engineering review.

The issue is reproduced when the Parent Task spans across two pages. 

Additional Information

Workaround :- Turn off the "Show Expandable Tree" option on the View Options.