Operating system: windows 10 pro 1903
Graphics card: gtx1050
Broken: 2.81 Beta, 2019-10-15, cfb6ffd48f77
Short description of error
Cannot rotate scene in 3D viewport after opening any project of 2.81. Have tried installing 2.81 again but error still exists.
It works well when open a project of 2.80, and possibly works well when open a project of 2.80 but saved by 2.81 last time.
Exact steps for others to reproduce the error
1, Create a project by 2.80.
2, Open it by 2.81, do some changes, save it and close blender.
3, Open the project again, now the scene cannot be rotated, at least in my computer.
In step 2, if keep blender 2.81 running and then open the project again, it works well.