AI doesn't double block menacing Maarika

[[Maarika, Brutal Gladiator]] has the ability "Maarika, Brutal Gladiator must be blocked if able". If you give Maarika menace, then she must be blocked by two or more creatures. This works for players in XMage as they aren't allowed to only block her with one creature, however AI opponents can ignore the menace and single-block her, which shouldn't be possible.