Collectible Card Game Headquarters

Describe the Bug:
When you enchant with Flowstone Blade an opponent's creature and then you activate it's ability it taps an of opponents mana.If opponent doesn't have such mana you can't activate it consequently.
Works fine when on controller's creature.
Which card did behave improperly ?
Flowstone Blade

Which update are you using?(date,name)Which type(Duel,Gauntlet,Sealed Deck)
Manalink 2014/9/28: Conspiracy for the recoding of M15 minipatch 3,duel

What exactly should be the correct behavior/interaction ?
Flowstone Blade

Are any other cards possibly affected by this bug ?
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Also affects Firebreathing and Dragon Mantle.

Well, these are different bugs.
Firebreathing does not grant an activated ability, and thus is fixed in a9a22aa
Flowstone Blade & Dragon Mantle grants an activated ability to a creature and won't probably never works perfectly on an opponent's creature, since the one that could click on a card to activate is only the controller under Manalink.

You are wrong Gargaroz Flowstone Blade is exactly the same as Firebreathing it doesn't grant the ability to the creature.
You are right about Dragon Mantle which grants the ability to the creature so the creature owner can only activate it.

Thanks AJ, that splipped me ! Fixed.