KCalc Constants Buttons no longer work

[Lester M Petrie]

Hi

I am not sure when this happened, maybe as long ago as updating to Fedora 23. 
But now when I click one of the Constants buttons in KCalc, nothing happens. 
The button says it has the correct symbol, and seems to accept the correct 
definition, but it won't do anything when clicked. Is anyone else seeing this? 
I haven't filed a Bugzilla yet.