Bug in Elite Onyx quest, can not open the portal

[Fwend]

I was informed yesterday on discord by a friend that there is a bug in attempting to complete the Elite Onyx quest in Black Smoke Mountain campaign (Level 76)

The quest is : A New Age



She completed all the other quests in the campaign and has 21/22 quests complete.




She killed the Red Dragon Slayer boss 76 times and was awarded the vanity Shadow Minion Disguise

She even crafted this vanity in Forest Haven into a vanity version




But when she and I have attempted to enter map 4 of Black Smoke Mountain campaign - Red Dragon's Lair and have entered the portal where the Emma boss is, then down the hole to the next portal. Wearing the Shadow Minion Disguise usually would allow you to enter the next portal to the map where Elite Onyx is.

However, the portal and the Shadow Minion Disguise does not allow you to enter the map


My friend would like to complete this quest and can not.

Can this bug please be fixed?