It hasn’t doesn’t necessarily mean “it won’t.”
More German Proverbs:
When the measure is full, it runs over.German
One bad eye spoils the other.
German
The unbidden guest is ever a pest.
German
As the tree, so the fruit; as the mistress, so the maid.
German
What's the good of a sun-dial in the shade?
German
What the eyes see, the heart believes.
German