Justice not summoning skulls

When I use Justice and cast its ability “Icy Surge,” I’m unable to select skulls, which is the intention of the ability. However, in my last battle against a ranked PVP opponent, the AI selected to create skulls, which turned the tide by creating enough to get skull combos, and I lost the match. Not cool!

Unfortunately I can’t easily replicate this, but surely other players have experienced this bug (there are so many Justice defense teams in PVP right now).