Was testing a Surface Pro 4 now that it was mentioned in the release notes that support was added in 18.104.22.1680 and so far most things work as expected. The On Screen Keyboard was the only piece that I haven't seen function correctly. I can apply a policy that turns it on and forces it to show but when I try touching the screen the letters either don't take or it will show one letter sort of acknowledge and changes to blue as if it was pressed but never any further. Once I attach the screen cover keyboard I can type without issue and logon. Any thoughts on a fix?
I too have this issue, running the latest patched version of Encryption and latest Firmware. This seemed to be an issue that was fixed for the Surface pro 3, yet no solution for the pro 4