Mine doesn’t have any of those problems. The only thing I had to do was ensure the input selection was set to PC.
But then I’m using it 90% to stream stuff that is web only and some occasional gaming with the bonus of being able to fill out forms, Google and do light note taking without getting a different device. My alternatives would be needing a laptop or tablet along with some streaming device.
You can also easily install the Bnet launcher (If you wanted to) on your Steam deck. Which was very surprising that it worked so easily.