I created an epic today. I clicked the plus next to the "Issues in Epic" section of the epic to start adding issues that should be in the Epic. I was able to create the issue, but it does not show in the Issues in Epic section. It sill shows "There are no issues in this epic." I did verify that the issue was created as I can view it and find it outside of the epic. We do not have Agile turned on, but this is how we've been handling things for a while now.