Double clicking on application window in workspace switcher will display unassociated resize frame on workspace

When using the mouse to switch between workspaces in workspace switcher a double click on any application window (inevitable on workspaces with maximised windows) will display an auto-resize frame on the workspace which is not associated with any window.

Steps to reproduce:

1) Start Workspace Switcher by clicking the icon in the Unity launcher or via keyboard shortcut
2) Double click on a window contained in one of the workspaces to maximise that workspace
3) Move mouse against upper, left or right screen edge (lower edge cancels out this effect)

I run my browser, email client, RSS reader, torrent client, music library and various other things as maximized windows on seperate workspaces. This seems to occur only when a particular window is "selected" or rather "focused" by double click in the switcher view.

Expected behavior:
Double click on a workspace should bring up the workspace regardless whether a window is clicked or an empty desktop portion. On the selected workspace mouse movement over the upper, lower and right border should produce no results. Left border should display Unity launcher as per default behavior.

Actual Results:
Double clicking in workspace switcher seems to give the application windows some kind of special "focus" that is not used for moving the windows in the workspace overview. On the maximized workspace upon moving the mouse against the upper, left or right edge of the screen the "auto resize window" frame appears and can not be cancelled or adjusted. Moving against the lower edge does nothing as intended.

On workspaces with maximized windows moving the mouse against the left screen edge will bring up the Unity launcher as by default but overlay it with the resize frame which is not associated with the opened application. One needs to first double-click the Unity panel of the application to put it back in window mode and then click its title bar to have the rogue resize frame change the window size accordingly and disappear. Then manually bring the window back in it's original maximized state. Unity launcher will accept normal mouse input but the resize frame does not. The only way to get rid of the resize frame is to click the title bar of a non-maximized application to have it resized.

Suggestion of actual implementation:
I can see this working as a feature if on moving an application window to another workspace via the switcher and giving it focus via double click (in switcher) the application will give me the option (once the new workspace has been rendered) of selecting upper border (maximize), left or right border (half screen width) or lower border (no size change). If implemented this way this needs to be an option that can be disabled.

The behavior right now is just glitchy since once you have moved the mouse against one of the three resize edges you can not change your selection. If selection was included this could actually work towards usability.