System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: Radeon RX 580 Series ATI Technologies Inc. 4.5.14736 Core Profile Context 20.8.3 27.20.12027.1001
Blender Version
Broken: version: 2.92.0 Alpha, branch: master, commit date: 2020-11-05 00:02, hash: rB86bdc959a399
Worked: 2.91 beta and before
Short description of error
Latest 2.92 alpha and Huion WH 1409 v2 viewport rotation with pen side button not working anymore.
When i set the tablet API to Windows Ink instead of Automatic it viewport rotation with the pens side button works again but the pen pressure isn't working properly (way to sensitive pen pressure input).
Oh and btw the problem wasn't there a couple of days ago. It's something fresh.
Exact steps for others to reproduce the error
Try viewport rotation with the side button of the Huion WH 1409 v2 (but i bet it's not only that model) pen and 2.92.0 Alpha, branch: master, commit date: 2020-11-05 00:02, hash: rB86bdc959a399