overview: Don't expand workspace thumbnails by default
We currently expand the workspace switcher when workspaces are being
used, that is when there are any windows on a non-active workspace.
While this helps with the switcher's discoverability, it does eat into
the space available for window previews. By now the component should
be well established, so we can afford opting for space efficiency and
only expand the switcher while the user actually interacts with it.
projects / gnome-shell.git / commit