Think of it as a selector. The floor you’re on has the images of the mobs on that floor. The floor tile and those images require more space and to account for that space and for it to correspond to the floor in the building, they’ve increased the height of the floor the battle is taking place on. It actually does make sense
Nah, it’s really not. I deal with this every day with our mobile/web developers. It’s quite common in certain situations. Plus, they mostly develop according to the UX designs for which developers are, in most cases, not responsible for.