Hello, I'm a Gustav too! Good feedback I think.
Off-hand Attack: This should be optional, I know you guys have the button on the character sheet, but as soon as you hit with and attack the character just goes and attacks with it, not leaving options for the bonus action use.
I am not 100% certain this is what it does, but when I was dual-wielding I noticed there was a small selection toggle under the melee/ranged selection icons on the hotbar. And I don't think I tested it, but for some reason it gave me impression that it toggled whether you automatically used your bonus action to off-hand attack along with the regular attack.
