Then your first mission sends you to a mine, where you fumble around in the dark even while holding a torch.
I suspect most people just quit at the 4 hour mark due to this.
I am over 50 hours in, and have had no issues with bugs, quest based or otherwise. True, the GUI is odd, but you can figure this out in 5 minutes if you want to, so that really isnt a concern. The gameplay is fun, and there is a lot to do. Enjoy.