The bonus power -
On claiming the reward for a minor heroic encounter - observed result -
Expected result -
Turning in the weekly quest "A Heroic Undertaking" - observed result -
Expected result - 3 additional Iron Curios (10% of 25, rounded up).
The Progress Bar seems to indicate that the 3 bonus Iron Curios were awarded, but should appear at the lower right to confirm.
I did not check the before/after counts of Bashin' Ordur Plans when claiming heroic encounter rewards, but will do so next time. Maybe this is just a cosmetic issue rather than a bug...
Edit: Confirmed - no bonus Bashin' Odur Plans are being awarded for heroic encounters.