This demo is really good. I had a lot of fun. My only gripe was that I wasn't able to use the D-Pad on my PS4 controller (the hats). Other than that, really good and will definitely play this when it fully comes out!
Ow, I play on PS4 controller myself and I think it's the best way to play it, so definitely want to fix that for you. Could you tell us how you connect your controller (wired, bluetooth...) and what hardware you're using (win/mac/linux)? Then I can try to reproduce it.
Hmm, I tried it on serveral PC's but I was not able to reproduce this. The d-pad (and the stick) work on all PC's with my DS4. Also not using any additional software. Maybe you can try it on a different PC and see if it works there? Or try connecting by bluetooth?