I was playing in the Legacy format and had a Sableye with a dark energy attached, with a Mewtwo EX on the bench with a dark energy attached and equipped with an EXP share. The Sableye was KO'd, and the energy went to the discard pile.
I remember this issue existed before, why is this happening again? As a matter of fact, why do old bugs reappear? These simple gameplay issues are getting old devs.