[fixed/closed]Sunken Ruins (all filter lands)

[HarlequinCasts]

Describe the Bug:
Whenever there is anything on the stack, Sunken Ruins (and probably all filter lands) only produces a single mana instead of 2 mana. So in practice, using a filter land to cast a Counterspell or other responses may leave you unable to cast the spell.

In the example, I have a Pithing Needle on the stack, and simply activating the Sunker Ruins has short-changed me.

Testing with every filter land in play and shifting mana around produces odd results. Often I will have negative mana of one color. In most cases doing this with a spell on the stack causes you to get short-changed, or receive negative mana making it possible that the next activation will create zero mana.

Which card did behave improperly ?
Sunken Ruins (probably all filter lands)

Which update are you using?(date,name)Which type(Duel,Gauntlet,Sealed Deck)
PWNMv2

*** this appears to work in PTT

What exactly should be the correct behavior/interaction ?
A filter land should always produce 2 mana of any combination of 2 colors if you pay 1 of those colors.

Are any other cards possibly affected by this bug ?
Graven Cairns
Fire-lit Thicket
Mystic Gate
Sunken Ruins
Wooded Bastion
Cascade Bluffs
Fetid Heath
Flooded Grove
Rugged Prairie
Twilight Mire

[Korath]

Shouldn't have been reopened.

[HarlequinCasts]

confirmed. this is working fine.