Dr. Morrigan disappearing when drawn

In normal adventure against Archmage Kalec, i have Dr. Morrigan on board and no cards left in the deck
He kills my Dr. Morrigan, that goes in the empty deck
https://i.imgur.com/7BhrV1f.png

My turn starts, the draw animation triggers, my other cards in hands shift to the left, but Dr. Morrigan is not in my hand
https://i.imgur.com/tKg1p02.png