It happened to me a few times now. Especially, a beast or undead decks with a lot of reborn and deathrattle.
I playing battlegrounds duo with me as Ozumat with monstrous macaw + leapfrogger + goldeinn + sly raptor + fish of n’zoth + 2 Titus rivendare. My partner had a murloc build.
The other side had a N’zoth with a similar beast build and his partner with a undead build.
The game is very reborn and deathrattle heavy and the animation took too much of the time. I suspect it works differently on desktop or something because while I’m stuck watching the battle animations, my partner is already pinpointing me of if I wanted certain cards early on.
The main issue happened on the last few turns because while I’m watching the animation, which I can’t skip or speed up, my preparation time is already over and I jumped straight into the next battle.
What makes it more annoying is that while i was still watching the battle, my partner passed me a new rivendare for a triple. As soon as it is over, I can’t play it because I was stuck in battle animation and now I’m taken straight into the next battle. The build is terrible without a rivendare.
What made it even worse is that while I was watching the battle the turn before the final battle, my teammate was already emoting me for not playing rivendare and by the time the battle animation, not only I don’t have time to play my prep time and taken to the next battle, the other team had already left.
Similar animation eating up the given time happened in where I had a demon build with multiple wrath weavers and soul rewinders. I play a couple of demons and the animation just eat up 80% of the time.