Energy Cards Dissapear - Energy Recycler

Rodrigoasdf8

When bringing back from the discard pile a number of Energy Cards to the hand (4 to replicate). It seems that a bug ties them together when they are used with another ability, and they're all discarded.

Conditions to replicate:

1) Bring 4 Water Energy back from the discard pile to the hand using Energy Recycler.

2) Use the ability "Concealed Cards" of Radiant Greninja in the same turn.

3) All the cards are discarded when choosing only one.

This has already happened to me twice. Can someone see if this is an actual bug or a missplay of some sort?

Thanks

TechHog

Energy Recycler brings cards back to the deck, not the hand.