Derelict Mansion Map

Defeated the 2 map bosses in the middle. Didn't register them as dying so I'm stuck in the boss room without being able to portal out. Map is completed on atlas but clearly not registered within the map, no loot drop as well.

Also to add-on

Similar bug happened somewhere in the campaign and I was able to invite someone and leave the instance by clicking on their portrait travel button.

Did not work this time, was told Can't portal during a boss fight.

I assume my only option was staying offline until instance closes.