System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 460.79
Graphic Tablet : Huion Kamvas pro 16
Blender Version
Broken: version: 2.92.0 Alpha, branch: master, commit date: 2020-12-14 16:29, hash: rB010f44b855ca
Worked: 2.91.0 - hash : rB0f45cab862b8
Short description of error
When using a table graphic that isn't using the Windows Ink tablet API, the middle click no longer work when navigating Blender (Pan, rotate, zoom)
When using the Automatic or Wintab option, pressing one of the pen button only register when the tip of the pen touch the screen/tablet.
It wasn't like that before. It is a Blender API issue
If I use Windows Ink, I loose the pen pressure, so this option is not valid
Graphic Tablet : Huion Kamvas pro 16
Exact steps for others to reproduce the error
1- Use a table without the Windows Ink (Non-Wacom if possible)
2- Make sure it is windows ink is disable on the tablet driver
3- Open Blender
4- Go in the User Preferences
5- Use the Automatic/Wintab tablet API
4- Go in the 3D Viewport
3- Press the middle mouse button without the tip of the pen touching the screen/tablet
4- Viewport won't move

