Hopper with redstone does not stop hopper below from pulling items from it.

This issue has been posted before, but it was 'resolved'...

Minecraft 1.5.1 still has this issue.
Hopper 1 has items. Hopper 2 (below the down facing hopper 1) has free space.
Hopper 1 is locked by redstone signal, hopper 2 is not. Hopper 2 pulls items from hopper 1...

Is this really supposed to happen?