I think it may have been one of the random not getting a move from a match 4 or 5. I recreated it a couple times, and it didn’t seem to happen again.
It was SO obvious when it happened, I figured it would happen every time.
My Borealis, fully traited, making a match 4 vs a fully traited bone dragon loses turn.
At no point in time should Borealis be considered Frozen to lose the turn, due to insulation.