The bug with the flashlight turning off and busting the camera is the only issue from that list that I seem to be experiencing.
However if Google hasn't fixed that since the developer previews what if it isn't a bug but a safety measure so that the flashlight doesn't cause the phone to drain excessive battery, heat up and possibly cause damage to the LED itself...
But even if it we're a safety precaution it's a poorly implemented one, given how the camera and flashlight APIs(I believe that is the word) are tied together, and any software issue with the flashlight busts the camera as well. :/