Hi @jabrillo ,
You got three bars because issues related to the same epic come from different projects.
The problem of having issues from multiple projects linked to the same epic has already been around for some while.
Solution for a similar problem was provided in this community thread - Sum story points by epic cross project.
You can define a new hierarchy with levels Epic>Parent>Sub-tasks by removing the project level. Here is a definition for Epic without project hierarchy described in our documentation.
With this approach, you can use the new Issue hierarchy for your report, and any default measure will work there.
Regards,
Oskars / support@eazyBI.com