Collectible Card Game Headquarters

Describe the Bug:
Volrath's Shapeshifter ability to discard a card can't be activated when it is already a creature copy of the creature that is on top of graveyard.
Other bug about Volrath's Shapeshifter here: viewtopic.php?f=86&t=15677&p=165279&hilit=Volrath%27s+Shapeshifter#p163678

Which card did behave improperly ?
Volrath's Shapeshifter

Which update are you using?(date,name)Which type(Duel,Gauntlet,Sealed Deck)
Manalink 2016/08/27: Eldritch Moon v2, duel

What exactly should be the correct behavior/interaction ?
Volrath's Shapeshifter ability can be activated when it copies another creature as it has also the discard ability.

Are any other cards possibly affected by this bug ?
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Fixed in 8cd3817

Volrath's Shapeshifter now works in many occasions but not if when you cast it the top card of your graveyard is a creature. It "copies" the creature but can't activate Volrath's Shapeshifter own ability. It will gain the ability only if it gains again it's own text and it will work from then for copies, too.