Clipping plane input does not accept input from numeric keypad

[bourgouina]

egs_view seems to not accept num pad

[ftessier]

This is likely related to the operating system. As far as I know there is nothing in Qt that distinguishes number input from the keyboard or from the numeric keypad. From my end, it works on Linux and macOS. Can you provide more details on the OS, and confirm that the num pad works as expected in another context?

[bourgouina]

I confirm num pad was working has expected in other programs.
Operating system, Linux: CentOS