If you are considering buying the 2017 Edition of Spectre X360 15 laptop for the pen feature, hold your horse and read on! I got my Spectre X360 15.6 2017 edition few days ago and immediately notice this very annoying issue. In short, the touch function is disabled for about 2 seconds after using the pen, which means everytime when you finish writing something with the pen, you have to wait for about 2 seconds before the touch screen responds to your finger input. UPDATE 20170410: The nice folks from HP China just contacted me, they told me HP US was aware of this problem and working on a firmware update which should be released by the end of April. UPDATE 20170327: Uploaded a video to YouTube demonstrating this problem, I have to apologize for my English, not native speaker here. Also included a Ntrig pen compatibility test in the video. Also the "Ignore touch input when I am using my pen" setting doesn't solve this problem. This is really annoying, and it slows down my workflow dramatically. And I have never experienced this issue before on any devices using NTrig digitizer, and I have used a lot NTrig devices (Fujistu 550, HTC Flyer, Sony Vaio Duos, Vaio Flips, Microsoft Surfaces). But I did noticed similar problem on some Wacom AES devices like the Thinkpad Yoga 14. I do remember HP mentioned somewhere that the pen uses Universal Windows Pen protocol, Is this part of the new protocol? Besides the touch delay, I also experienced the usual Ntrig phantom clicks and the left cooling fan has been making clicking noises every time it comes on. I do like this device a lot, and are willing live with the minor issues, but the touch delay is a deal breaker for me, I would hate to send it back to HP.