Corner stairs have incorrect hitboxes

All Stairs Gave Such Hitboxes, It Is Just When You Are Starring At The Gap, You Should Be Able To Access Whatever Is Behind It, Which Is Impossible As You Can't Use A Corner Stair In That Occasion Anyway.

All hitboxes are rectangular, intended.

Interesting, as this allows the ability to right click through upside down stairs and perform tasks behind it (eg. open a chest).

Reopened.

Confirmed in Minecraft 1.5.1

Duplicate of MC-1307.