Both Pressure and Tilt are not available. No Problem in Photoshop, artrage6, rebelle3...
I had reached out to Corel tech support previously, and just checked in with the replier last week (I asked about Painter 2018 that I own). Here is their reply: "For 2018, there will be no updates, I'm afraid. Anything regarding the SurfaceBook interface will be worked on in the upcoming versions of the program. As it stands, the issue is still "broken" in 2020 / 2021 as well. From what I can glimpse, the interface is giving us the hardest of times, as each time the OS is updated, something changes. I can assure you the team is working on the issue, and hopefully will have a solution down the road. There isn't anything at the moment however."I think we all know that the blame is not on Microsoft, because all other illustration apps work well on Surface! Corel just doesn't want to address the issue, and it's a shame.
Sia thank you for reaching out to Corel. I agree, everything else works. Corel never fixes bugs. They try to get you to buy the next upgrade and brush packs but real important fixes for essential functionality are rarely fixed. This problem now goes back several versions. I am sorry I wasted my money on the upgrade. The surface is such a practical and portable painting solution that can run full fledge programs such as Photoshop, Autodesk Sketchbook and so on that work just fine. There are far better and easier programs now anyway. Another-one is Procreate on the iPad. It works far better and has full pressure and tilt support and such an efficient interface.