Can you please provide more details? What game mode? (Ranked, Casual, Standard, Wild, Arena, Adventure, Battlegrounds)
Which battlecry minions were involved?
Did you or your opponent play them? Were they played from hand or brought into the game in another way?
What other minions were on the board? What spells were played by you and/or your opponent in the prior turn(s)?
If you have screenshots, or even better an hsreplay.net link or video recording, then please share it here so Blizzard has full access to all relevant details.
(See How to share links to screenshots, videos, and replays for how to share this).