No, it literally says the law says you must seek permission if you wanna leave for more than 3 months and the govt must always grant you this if not in a war. And if you fail to seek permission nothing happens. You can ignore it without consequence.
At least Germany isn't looking at entering any wars at the moment...
>And if you fail to seek permission nothing happens. You can ignore it without consequence
The consequence is you violated the law, and they can have you at any time, even retroactively, for that.
That they don't is merely a detail. If it really has "no consequence" they should remove it.