Starts with the bot not being able to load any dungeon scripts, then the bot spams LFG queues until one pops, and finally it leaves the group because "group has no tank". Usually does about one or two rooms of mobs before it quits.
This issue has been posted before. Its not an issue with DungeonBuddy itself. The HB core does not have support for role detection yet so it does not see a tank. Still waiting for the update to HB that supports it.