'Drag to change work plane size' does not work

[lure23]

Prepare:

- create a construction plane

Steps:

- bring the cursor near the construction plane's edge. The cursor should change to a fat '+' shape.

Expected:

- dragging by the mouse, the edge should follow (as indicated by the tooltip)

- the selector dialog (usually invoked by a long primary mouse button press) should not be shown

Actual:

- the edge doesn't follow mouse movements

- the selector dialog is shown (which doesn't really help in the situation)

A video showing this:

https://www.dropbox.com/s/qyex0qx2uk3av8g/Drag%20to%20change%20work%20plane%20size.mov

Also, the '+' cursor is not the best choice here. It's used in spreadsheets but not for this purpose even there,

A better choice would be the 'edge with arrows in both directions' cursor: 

Versions: Fusion 360 1.8.601, OS X 10.8.4