AI-Bruna, Light of Alabaster freeze when ready to attack

Describe the Bug:
AI had Bruna, Light of Alabaster as soon as AI was ready to attack game froze.AI had no auras in hand or graveyard and there were no auras on battlefield either.Doesn't happen for player.
Which card did behave improperly?
Bruna, Light of Alabaster - AI
Which update are you using? (date, name)Which type? (duel, gauntlet, sealed deck)
Manalink 2016/08/27: Eldritch Moon v2, duel
What exactly should be the correct behavior/interaction?
Are any other cards possibly affected by this bug?
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AI had Bruna, Light of Alabaster as soon as AI was ready to attack game froze.AI had no auras in hand or graveyard and there were no auras on battlefield either.Doesn't happen for player.
Which card did behave improperly?
Bruna, Light of Alabaster - AI
Which update are you using? (date, name)Which type? (duel, gauntlet, sealed deck)
Manalink 2016/08/27: Eldritch Moon v2, duel
What exactly should be the correct behavior/interaction?
Are any other cards possibly affected by this bug?
-