Reproduction steps:
- Activate “Amazoness Secret Arts” in your graveyard to banish it to trigger its second effect.
- Activate Polymerization from your hand.
Expected result: You are able to fuse using one fusion Amazoness monster from your Extra deck combined with your Amazoness monsters on your hand and field.
Actual result: You can only use your Amazoness monsters in your hand and field, no extra deck monsters.