Saviors of Uldum: Tombs of Terror Bug

I decided to play on mobile since i was away and found out that whenever the opponent would play a secret the game would freeze and had to close and re-enter the app to go on with the game. The bug happens consistently whenever the opponent would play a secret. Fixing the bug will be greatly appreciated. On a side note, ever since Finley was released as a hero for Battlegrounds his hero power in Tombs of Terror would cost gold instead of mana (same issue occurs with Pyramad as well), which is a bit weird but has no impact on the gameplay whatsoever. I just find it weird that this visual bug still exists today after years and it hasn’t been fixed, nor mentioned