After holding Confirm at the start of battle for what felt like record (waste of) time, I checked out the Battle History. I wanted to scroll all the way to the top to make a screenshot of just how much stuff I had to sit through before any creature even got a turn. The battle starts with Fearsome Gargantuan auto-attacking, but the oldest message in the Battle History was an enemy creature dodging an attack. I checked the whole history to make sure the messages weren’t just displayed out of order, but no mention of Fearsome Gargantuan attacking anywhere.
By the way, scrolling up some 600 lines took over one minute. Any chance that could be a little faster?