I evolved a few bronze fighters and got this issue for all of them. Tried it with Painwheel, Parasoul, Peacock, Filia, and Double.
I was stuck on the evolve selection screen instead of going into the blank screen once I had finished selecting fighters and choose to evolve. However the sacrificed fighters' cards still dropped from above the screen to the middle of the screen. I could hear the main fighter's dialogue but not see them and then once the final card fell, the cards were set spinning. This is roughly when the correct background screen took over from the fighter selection screen. After the cards stopped spinning but right before the evolution was finished, I could see the main fighter doing the last second of their animation. Then the evolution finished and the screen went to the main fighter's power up selection page.
I was stuck on the evolve selection screen instead of going into the blank screen once I had finished selecting fighters and choose to evolve. However the sacrificed fighters' cards still dropped from above the screen to the middle of the screen. I could hear the main fighter's dialogue but not see them and then once the final card fell, the cards were set spinning. This is roughly when the correct background screen took over from the fighter selection screen. After the cards stopped spinning but right before the evolution was finished, I could see the main fighter doing the last second of their animation. Then the evolution finished and the screen went to the main fighter's power up selection page.
