I'm currently posting this with TornTools enabled.
Just a very minor visual bug, not affecting gameplay in any way.
On the Home screen item layout, it shows damage and accuracy numbers. Even if the number is for example exactly 40.00 it shows with 2 decimals.
For specifically Penelope it shows 17 damage without the .00 . Just a small visual error, I tried with a couple of different weapons where it kept showing .00. So it seems just to be for Penelope. See screenshot below.