Lightroom: Clarity is not correct

Can you show a before/after example of what you're expecting and what actually happens? I'm not away of anything changing there.

Clarity is supposed to add contrast and sharpness, because what it does is increase so-called ‘local contrast’. The name is somewhat misleading.

Clarity has lots of variety. For example Capture One’s clarity selections are perfect. But Lightroom CC’s Clarity works wrong.

So you're comparing against a completely different tool from a different manufacturer that happens to have the same name? 

Perhaps you'd like to show us an example of the kind of result you want to get then, and we can change the request into a feature request for a whole new slider.