This can happen if you open two or three terminal windows, and then
open the overview -- they're not centered. The issue is that because
of the WINDOW_CLONE_MAXIMUM_SCALE clamping, the scale that is being
laid out is different from the scale that the layout was calculated
for.
Implement and document a hack-ish solution which simply keeps the
scale for the layout as originally calculated, but centers the
windows inside the cell.
https://bugzilla.gnome.org/show_bug.cgi?id=694902
083c37a7b2