Maybe my game is corrupted in a tiny way somehow, because I haven't seen this reported yet, but I'm missing a tile out of the map in the battle against The Big Fluffy Bunnies. I've reloaded the battle several times, and it hasn't gone away. Nothing game breaking, just something I thought I'd bring to light.
More often than not: using Solid State Shield will cause a random teammate nearby the caster to disappear. If you complete the battle afterwards, they're counted as having died.