Making "Duplicate" a real status wouldn't work well, because real statuses are context-specific, and a single bug report can have multiple contexts.
I've reported showing marking/unmarking a duplicate as bug 446234.
Making "Duplicate" a real status wouldn't work well, because real statuses are context-specific, and a single bug report can have multiple contexts.
I've reported showing marking/unmarking a duplicate as bug 446234.