We have noticed on a few occasions that issues are missing from our roadmap views within an Epic. In one example there are 7 issues in an Epic (status "accepted") and only 6 of them show up in our Roadmap Plan. All 7 issues have a status of either "done", "accepted", or "invalid". The missing issue is "done".
We could find nothing out of the ordinary for the missing issue. It was processed like all others within the project. No filters in place in the Project or Roadmap.
Any ideas why this is happening?