I am right now at the Champions Recognition Vendor with a character who has Moonstruck as of his powers, but the Vendor does not say "You've already purchased Moonstruck!" when I look at the power. It's been slotted for months now and I unlocked the power more than a year ago.
Perseus, Captain Arcane, Tectonic Knight, Pankration, Siberiad, Sekhmet, Black Seraph, Clockwork
Project Attalus: Saving the world so you don't have to!0