Have you modified the theme in any way?
Maybe this helps (it resets the window button layout to close left, maximize right): gsettings reset org.pantheon.desktop.gala.appearance button-layout
Is this the open file dialogue of a particular app or any does it happen with every app?
Have you modified the theme in any way?
Maybe this helps (it resets the window button layout to close left, maximize right): desktop. gala.appearance button-layout
gsettings reset org.pantheon.
Is this the open file dialogue of a particular app or any does it happen with every app?