How does this tool work?. I select my cube, go to edit mode, click the spin tool and nothing, the little gizmo thing won’t appear.
How is this supposed to work?.
At the left bottom corner of 3Dviewport, there is a button with a bow and an arrow (placed between Object Types visibility popover and Overlays popovers) : that’s gizmos visibility.
It should be Blue. But it is not the case.
It means that you disabled display of gizmos.
Spin is not the only gizmo that does not appear. You should not be able to see move, or rotate, or scale gizmo, too.
Navigation gizmo is not visible, too.