If Sword of the Animist destroys an Energized gem, the Overload1 effect on Aethersphere Harvester does not trigger.
(I suspect this will apply to Overload effects on other cards too)
Destroying energy gems does not trigger overload. It never has (one of the reasons KLD Chandra was so useless, since her first ability would literally undo itself).
Not a bug, just poor design