Arbiter of Ash, No chance to go back to Hideout, stuck in fight

i am having issues leaving arbiter of ash, i am unable to teleport which i experienced with Xesht, but everytime i died i was able to go back and re-gear to make my fight easier. i am unable to do that with arbiter of ash, ive probably died at least 40 times but unable to make any real progress. is there a way of leaving the boss fight? i am fine with wasting the fragments but i would really want to leave the boss fight, any help would be appreciated.

Yep same. Got to boss fight, need to upgrade my gear, but unable to get out. Portals don't work. Can't use /hideout. Seemingly trapped

Had to log out and wait for instance of boss fight to reset. 15-20 minutes, hope that helps