DR from Feat "Heavy Metal" not working with Sledgehammers

[Carypsis01]

Before the patch the Reduction from the Feat Heavy Metal also was applied when a sledgehammer was equipped.
Now it only works for Heavy guns or Rockets. It can only be used in the offhand (and heavy guns or Rockets in the main hand) to activate the feat.

Is this inteded?

[Styg]

Yes and no. The damage bonus used to apply when wielding sledgehammer, so that was fixed, but because the damage reduction also used the same function it was unintentionally changed.

Anyway, the damage reduction should now also apply when wielding the sledge in 1.3.0.16.