System Information
Operating system: Win10
Graphics card: GeForce GTX 960M
Blender Version
Broken: 2.81a
Short description of error
If you want to transform parts of a sculpted object while sculpting, Blender does not let you use the 3d cursor position as a transformation origin point. No matter what 'Orientation' is chosen, the gizmo remains at 0, 0, 0, regardless of where the cursor is placed in Object View.
Did this break after 2.81? This report shows the user using the cursor position for a transformation origin: https://developer.blender.org/T70020.
(Or, if I am overlooking something obvious, the documentation needs updated to clearly indicate how to do this.)