Currently the workspace geometry is updated on zoom/allocation
changes, which means that newly added workspaces use their initial
geometry of (0, 0, 0, 0) until the next zoom change. As a result,
windows on the affected workspaces are mispositioned, e.g. placed
outside the workspace area. To fix, set the geometry on newly added
workspaces to the view's cached values.
https://bugzilla.gnome.org/show_bug.cgi?id=649001
2021edd1fb