[confirmed]Spinebiter interface issue with multiple blockers

[client h]

Describe the Bug:
When Spinebiter gets blocked by more than one creature and the option to ignore blockers, as though Spinebiter isn't blocked, is choosen it ignores that choice and only wants to deal the damage (-1/-1 counters) to the creatures that blocked Spinebiter. When Spinebiter gets blocked by only one creature both options work as should.

Which card did behave improperly ?
Spinebiter

Which update are you using?(date,name)Which type(Duel,Gauntlet,Sealed Deck)
Manalink Update 2014/05/06: Journey into Nyx / TYPE: Duel

What exactly should be the correct behavior/interaction ?
When Spinebiter's ability to ignore blockers is choosen it should ignore them and deal its damage in the form of poison counters to opponent, no matter how many creatures are blocking Spinebiter.

Are any other cards possibly affected by this bug ?
No.

NOTE: When using the saved game attack only with Spinebiter and it will get blocked by two creatures.

[BAgate]

Interface is bad (you are asked to assign damage to creatures), but it actually works as intended.

[BAgate]

Devs, is this interface issue fixable, or do we just have to live with it?