It's day 2 after Filthium Zero release and here's the first patch with some bug fixes!
Changelog:
Fixed a bug in Shop, where the Ultimate Ability Damage item wouldn’t save its rank after purchase;
Fixed a bug where activating Bladestorm ultimate while aiming wouldn’t stop the main weapon;
Fixed a bug in Shop, where Refund popup window would not properly close when pressing Gamepad Right Face button or Escape.