In this case I use Ubuntu 18.04. On another device with Ubuntu 18.10 I
have the same UI problem.
Because the view in the Pop-down usually reflect the same wrong
appearance as the configuration dialogue, I thought that both may have
the same source of error. This case where the Pop-down not appear
Reading again it seems there is at least one settings issue. What
version of Ubuntu are you using?
** Also affects: gnome-control-center (Ubuntu)
Importance: Undecided
Status: New
** Changed in: gnome-control-center (Ubuntu)
Importance: Undecided => Low
** Changed in:
