Wait...

Current virtualGizmo3D mouse usage (directly on screen) :

Left Button -> free rotation
Right Button or Whell -> Dolly/Zoom
Shift or Ctrl + Right Button -> Pan
Left click -> stop idle rotation (if active)

Shft + Left Button -> rotation ONLY around X
Ctrl + Left Button -> rotation ONLY around Y
Alt or Super + Left Button -> rotation ONLY around Z

**some browser have a trouble with right button, for internal use