JIRA - Show sum of original estimate on the Epic Card in a Kanban Board

[Edoardo Polito]

Hi all,

I am trying to show on the Epic Cards on a Kanban Board (JIRA v. 8.9.1) the total sum of original estimates of the issues within that Epic.

1 - First, I have enabled Original Estimates via: Board -> Configure -> Estimation, where under 'Estimation Statistic', I have selected 'Original Time Estimate'. 

2 -Then, on the page 'Card Layout', I have selected 'Σ Origianl Estimate'.

As for the Board filter: 

project = xyz AND status not in (Closed , resolved) ORDER BY RANK ASC

The board is showing only the epic cards as I have assigned the epics to specific statuses and select to show those on the board (while keeping out all the statuses issues are assigned to).

Unfortunately, the field 'Σ Origianl Estimate' is returning 'None' on every card on the Kanban Board. It shows a value only when I assign a time estimation to the epic itself, which I think should not be the behavior here.

What am I doing wrong? 

FYI: I am not an administrator and I cannot install any plug in, or write scripts. 

Thanks in advance. 

[Edoardo Polito]

Is there any free plugin that would achieve the above?