I've set up a sandbox plan to figure out how to set up our team's roadmaps. One item I'm struggling with is setting 2 tasks to finish at the same time. I've set the dependency using "Must finish together with" between 2 issues. I expect the Auto-scheduler to align the end dates of the 2 tasks, but it is not. It is aligning the start dates, which is not what I need or expect. Is this a bug? Screen shot for additional information:

I want the Design Epic 1 and Discovery Epic 1 to end at the same time. 2 different teams are assigned to these, and the settings are to allow concurrent work. How do I set this up so they end together other than hand-setting the date?