Embedded JIRA-Ticketlist: Display Options do not work properly

Some display options in the embedded JIRA-Ticketlists do not work properly - the values of a mixed list of epics, parent issues and issues are not shown as expected:

• tickets with subtickets do not show values in the "Sum Remaining Estimates" column (although they do show values for Sum Original Estimate and Sum Time Spent
• tickets with no subtickets do not show values in any of the SUM-Columns (but it should be identical to the direct value, shouldn't it?)
  

Steps to reproduce:
1. Insert JIRA-Issue-List on Confluence-Website:

2. Define Filter and display options: