Portal from purifier disappeared

Bug report Number : 1 118 008 223

There is a bug when in mirage i try to fight the purifier boss in t16 city square. i can enter the mirage and then from there enter the boss arena and kill the maven witnessed boss (with destructive play on) and when the boss is dead and the animation from the leder happens, there is no portal created for me to go back out to the mirage.