Currently, it is possible to assign issues from one project to the sprint from another. I can see where this might be beneficial in some workflow. Perhaps you have 1 company-wide sprint schedule that multiple projects are following, but we don't do that. This has happened 3 times accidentally, and 0 times intentionally. When it happens, the issues don't show up on anyone's agile board, so they kind of get lost in limbo.
I don't think this is something we are ever going to want to do, so I'd like to disable it. How do I limit the list of sprints available in the Sprint drop down to just the sprints for the current project?