C'Thun not receiving buffs while out of hand

In the solo adventure “Kobolds & Catacombs” upon taking the C’Thun card bunch I received C’Thun ,Twilight Elder and Crazed Worshipper. C’Thun was shown to receive the buffs from those cards on the side of the table properly, until the card came to hand without any buffs. Only while in hand the buffs started to work and apply to the card. Sadly, the replay corrupted so I am not able to show it happening.