This event has been made available with serial code GANJ 0UAG 0882, announced during the Pokémon anime TV broadcast in Japan.
The wonder card was incorrectly programmed as Male. However despite this oversight, when received legtimately in-game, it would be correctly genderless.
If users were to use PKHeX to create one, they should instead drag in the Gender fixed for PKHeX usage file instead.
Format Ver.2.1.2-12, Post Updated Date:20220812_1017