7 years ago, Bianca Eifert gave this example for tooltip with Graphics3D :
Graphics3D[{Tooltip[Sphere[{0, 0, 0}], "one sphere"],
Tooltip[Sphere[{2, 0, 0}], "another sphere"]}]
It does not work when I test it on Mathematica online.
I wonder why. Thank you in advance for any help.