Hammers have no effect on soul contract?

[Edi]

Originally Posted by lch

This is one of the things that periodically wash up on the main forum's top page. AFAIK it's always been this way. It's not a bug, and don't expect it to change.

Not always, but you need to go back to the Dom2 days before you hit a version where hammers worked on these. The change was made already in some Dom2 patch, I think.