Currently the **duplicate** tag does not hide the comment, but I think it should. Example: Calixte’s comments in Bug 1517513. https://wiki.mozilla.org/BMO/comment_tagging
Bug 1523653 Comment 0 Edit History
Note: The actual edited comment in the bug view page will always show the original commenter’s name and original timestamp.
Currently the **duplicate** tag does not hide the comment, but I think it should. Example: Calixte’s comments in Bug 1517513, which I had to tag as **obsolete**. https://wiki.mozilla.org/BMO/comment_tagging