Σ Remaining Estimate does not return any value despite having values in Σ Original Estimate and Σ Time Spent columns.

How to Reproduce

1. Create a new issue or task in JIRA. (let's say ABC)
2. Create a couple of sub-tasks under the ABC task.
   Log some time into the tasks respectively for best results.
3. Connect Confluence and JIRA via Application Links configuration panel.
4. Create a new page in Confluence.
5. Insert JIRA Issues macro via "+" sign in the editor toolbar.
6. Under Search tab, insert the related ABC tasks (which includes the sub-tasks) or use a JQL. For example:

   project = "ABC"

1. Use the following display options. (Key, Summary, Issue Type, Due Date, Assignee, Priority, Status, Σ Original Estimate, Σ Time Spent, Σ Remaining Estimate, Original Estimate, Time Spent, Remaining Estimate)
   
2. Click Insert to confirm and add the JIRA Issues macro to the page.
3. Observe the value in the Σ Remaining Estimate column.

Expected Behaviour

All values are shown in the columns.

Actual Behaviour

Σ Remaining Estimate value is missing.