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I found an interesting bug:

Once you *show the signet* and then "Leave" instead of "Next".
You will notice that they (General Ortholion's Henchmen) are gone and you still cannot enter the said mine because you haven't trigger the next line
And if you go back to where the first battle of the quest 'Climbing up is forbidden' takes place. You will notice that they are having a repeating rematch. Ergo, you will receive a signet again.