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Bug with Ancient Booster Capsule

TLDR summary: attaching the Ancient Capsule to an Ancient Pokémon does not recover from Poison as it should.

Turn A: Player A attacked Roaring Moon TEF, which has no Tools attached, with Glimmora OBF's attack to Poison it. Player A also had Radiant Hisuian Sneasler in play, and the 8 counters were correctly placed during Checkup.

Turn B: Player B attached Ancient Booster Capsule to the Roaring Moon, which should have led to recovery from Poison, which did not happen. Roaring Moon stayed Active for the turn and attacked as usual.

Checkup B: Roaring Moon takes 8 damage counters.