Another issue I found is the bot doesn't account for the rift boss spawning behind you in a previously explored area. It will just ignore it and continue exploring the fog, and then using the teleport stone if it finds it. Not sure how this can be handled; perhaps throwing a flag once the rift boss quest dialogue appears, making sure to not leave/progress until the boss is killed?
Had this exact same issue. Besides that seems to be working flawlessly! Doesn't open chests though, but yea the rift boss sometimes spawns and the bot will not pick it up and just keep exploring the dungeon.