KDE Password & User Account System Settings 'Freezing'

If, like me, you install KDE on Arch Linux and when editing your Password & User Account in System Settings it to freezes, then you need to do the following.

You need to change the default behaviour of chfn by changing the following line in /etc/login.defs.

CHFN_RESTRICT rwh

Change the value to frwh so it looks like this.

CHFN_RESTRICT frwh

That worked for me - but let me know if you still have a issue since I'm not convinced?  I could not find the fix on any official site, though it has happened to me on each of my installs (maybe because I consistently change the same fields).