Drag and drop, sloppy selection allows for multiple items to be dragged, unpredictable results

[GrahamBriggs]

On Android 4.0.4 phone (Kyocera), if I long click to start drag mode, and I carefully select the icon to drag, things work ok.

However, If I long click to start drag mode, then tap between the icon selected on long click and the one below it in the grid view, then both icons are dragged when I move my finger. On drop, the table does not redraw properly (there is a missing icon usually).