Shrine disappears

While playing Rastakhan’s Rumble, my shrine simply disappeared from the game when my opponent Zul’jin had a freezing trap active. Instead of returning to my hand like any other minion, it vanished from game play. I obviously lost, and this happened twice already, which is very frustrating in a game mode that I have to start over every lose. I have a screenshot if needed. I’ve been playing on iPhone 5s.

Known issue: