Hi, I made an account just to report this.
Like the title says, I was capable of attacking and moving while on the levelling up menu.
WASD moves your character, the up arrow key does your attack and the down arrow key shots your gun.
I'm currently playing on the newest version (v.1.05); I've tried making a new save, restarting, and redownloading the game, but to no avail.
Any help?