Justin Burkett <justin@burkett.cc> writes:

> Hi,
>
> First, don't set which-key-mode as a custom variable. This is a
> function that should be called after which-key is loaded.

That is actually fine, since every minor mode is also a user option.

> For your original question, the important thing is that
> which-key-dont-use-unicode is set before which-key is loaded. 

We can easily fix this by adding a custom setter: