Exponent in [slider] not working

Sebastian Schlecht's icon

I like to use the [slider] object with an exponential mapping.
When I enable "Parameter Mode Enable", then I have access to a property "Exponent". But, changing the exponent does not seem to affect the output.

The same works well with [live.slider].

I'm aware that I could scale the output after the slider, but I'm looking to directly change the behaviour of the slider object. Is this somehow a bug?