Entry to Manoki the Fevered boss fight blocked, unable to continue boss fight and finish map.

With delirium modifier on the Jade Isles map using Tier 15 6 modifier waystone I was blocked from entry to the boss arena. I was attempting to clear some of the enemies before entering the arena and in the process was locked out while I was still well away from the barrier. I have no way to pass through the barrier to join the fight. I cannot leave via portal. Using character select to go to hideout/town will cost me the only portal I have for this map.
Bug report reference number: 2734369583.

same here