Created attachment 42929 [details] screenshot of too small Country/Region/Language window 1-Dropdown buttons for paper format & measure system are beyond right edge of window, in spite of vast whitespace between current selections and buttons. 2-Samples don't fit in vertical space, in spite of vast whitespace directly above. This is a follow-up to bug 234943 which might should be a meta-bug that depends on this.
Created attachment 42930 [details] another screenshot after considerably widening window Even though here the window is considerably wider than default, the buttons are barely visible.
Created attachment 42931 [details] screenshot of time & date tab Even with still more window widening, time format does not fit space provided.
I'm rewriting the kcm in SC 4.6 which should fix this issue.