Problem: I would like to institute a rule for my teams, "One component per issue", and I do not see a setting, in the administrative section of JIRA, to implement this.
Relevance: Many of our reports look into the breakdown of any given project's work by component, having multiple components per issue can, ever so slightly, misrepresent those reports.
Comments: I know I can skirt around this problem by creating a custom field but, when you are in a JIRA project, it is nice to be able to click on the puzzle icon in the sidebar and view issues by component.