KCalc does not recognize Numpad . (period)

with numpad on, or with numpad off and shift held down, the . does not have any effect in KCalc. (This is the key that is numpad-delete when numlock is off and numpad period/full-stop when numlock is on)

The key works in every other program. Kcalc 2.13 Kframeworks 5.6 plasma 5.2 manjaro stable open-rc/eudev/consolekit on x86-64 hardware running x86-32. BIOS-only hardware. usb keypad hooked up. N-key rollover is 6 on the numpad. good hardware. it is separate from the mini keyboard.

Reproducible: Always

Steps to Reproduce:
1. Load KCalc
2. Turn on numlock or hold shift key
3. press the numpad del/period(full stop) key

Actual Results:  
nothing happens. If  enter a value of 1.12 it comes out as 112

Expected Results:  
a period (full stop) should get entered.