Why does one terminal keep jumping back to the primary workspace?

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http://askubuntu.com – I've got Chrome open in the top-left workspace and two terminals open in the top-right workspace. The two terminals are snapped to left-half-screen and right-half-screen. When I alt-tab back to Chrome, the righthand terminal automagically show up on the left-half-screen of the top-left workspace? Can anybody explain why my window is teleporting to places where it doesn't belong? Better yet, do you know how to make it stay put? I'm running 12.04 with Unity, and I've disabled the overbearing alt-tab switcher that it came with in favor of "static application switcher". Thanks! (HowTos)