Using Shift key and sharpening slider

[RussF]

Following recent updates on CC I can no longer use the shift key in combination with the sharpen slider or the black/white sliders to look at the negative image to show what the changes are affecting.

Has this feature been deleted or has the feature been changed?

Any ideas?

Using Win10

[RussF · Accepted solution]

Forget initial post, just use the Alt key instead. Sorry for the inconvenience.

Problem solved.