Ghostly Prison Timeout Not Running
Just now during a Brawl match on iPad, while attempting to attack against an opponent with a Ghostly Prison in play, I had insufficient mana to pay for the attack yet the timeout did not run.
I was attempting to attack with three attackers but only had one untapped land and no other available mana sources. Even though I did not have enough mana sources to pay for even one of my attackers, I simply tapped "attack all." I was then prompted to pay 6, was unable to do so, and could cancel the attack. If I did so, the timeout would start to run and the "attack all" button and "skip" button would reappear. If I hit "attack all," however, it would take me back to the prompt to pay 6 and the timeout would stop. I repeated that action several times to see if it would change, and then stayed at the prompt to pay 6. I stayed at the prompt to pay 6 and no timeout prompt appeared and my opponent ultimately conceded.
Please attempt to recreate this bug and, if it is indeed not a one-off bug, please attempt to remedy at your earliest convenience. My apologies for lack of screenshots.