Shift drag objects pivot causing broken movement

In another related bug UE-38381, but this bug causes the cube to instantly move to where your mouse is located after shift is released a second time.

This occurs in 4.13 therefore not a regression.

1. Open any project
2. Place a cube in the scene
3. Click on the pivot point (white sphere) on the translation tool
4. Hold down Shift
5. Drag the cube around the level
6. Release shift, but NOT the LMB
7. Hold Shift again and drag the cube around the level
8. Let go of Shift

Result: The cube moves to the point where you moved the mouse instantly when shift is let go

Expected: The cube moves in the direction your mouse is moving, and the camera follows the object being moved.