I can confirm this behavior in Precise as well. All windows are moved to the first workspace when I remove it from the dock. My computer is a X220 plugged in the monitor through a dock (Lenovo ThinkPad Mini Dock Plus Series 3).
I can confirm this behavior in Precise as well. All windows are moved to the first workspace when I remove it from the dock. My computer is a X220 plugged in the monitor through a dock (Lenovo ThinkPad Mini Dock Plus Series 3).