Is anyone else having any issues with the quest "Inevitable Betrayal" in Stormriven? When accepting the quest you are to use the portal pieces on the pedestal to summon Karolak Nightspinner; however, when you summon him only 2 of his minions appear the "Shadow-Web Conscripts." After defeating the 2 minions, they respawn and Karolak still does not spawn. You can continue this over and over many times and only the minions continue to spawn and never Karolak.
This needs more attention. Because Karolak Nightspinner is a story boss that isn't appearing, this should be treated as a major bug with story progression that should be rectified ASAP.