Detach modal dialogs

In GNOME 3 model dialogs are attached to the windows where they belong to. That is neat for people that don't know to which program these dialogs belong. But if you want to bwe able to read what is underneat the dialog, they should be detached like they are in Windows of in Unity.

To do this install the d-conf editor

sudo apt install dconf-editor

and head to this value: org gnome shell overrides

and turn the attach-modal-dialogs off.