I have Ubuntu 20.04 upgrade from 18.04, now every time I launch gnome-control-center, the initial window position is outside of the screen (right side), I have to used short key
Alt + F7 to move into the screen to do the rest of settings.
I didn't have dual monitor.
I have tried reset all the settings by the following methods, but it didn't work.
$ dconf reset -f /org/gnome
$ gsettings reset-recursively org.gnome.shell
Similar issue happened in gnome-nautilus, but I got this fixed by
$ gsettings reset-recursively org.gnome.nautilus
How to make an gnome app initial window location to its default values?