Collectible Card Game Headquarters

Describe the Bug:
Game seems to allow the convoke activation even if the caster doesn't have enough mana for either normal or convoke cast

Which card did behave improperly ?
Convoke cards

Which update are you using?(date,name)Which type(Duel,Gauntlet,Sealed Deck)
2014/04/17: Apr14

What exactly should be the correct behavior/interaction ?
Game does not allow the convoke activation if the caster doesn't have enough mana for either normal or convoke cast

Are any other cards possibly affected by this bug ?
Convoke cards



In the screenshot, not enough total mana for normal cast (4 Savannah and 2 Llanowar Elves) or convoke (6 mana needed after tapping the 2 elves), still the game allowed Angel of Salvation to be cast for its convoke cost

It's probably counting the elves as both tappable for convoke and tappable for G.

It is as Korath says with 2 non mana producing creatures it worked fine.

Fixing it properly will be very difficult (it's the same underlying problem as this). Does it actually let you cast it, or just let you start paying for the cost?

In that case, game asked me immediately to convoke (ask to tap untapped creature with no cancel button), once tapped, game asked me for cmc - (1 x tapped creature)