The epic name/color are visible in "Plan" view of the Agile Board (scrum version, not sure about kanban), but don't show up on cards when in the "Work" view, only on the "card details" column if I click on a specific issue.

Adding it to the Cards view itself would be really helpful to help us arrange things together visually in our sprints. At the moment, we're resorting to putting the epic as a prefix of every issue summary.