Hi, first time posting here, hope this is the right place.
Just got build 2182, and am going a little batty with new drag-and-drop behavior on Mac OS X.
The issue is that a tripple click is the OS standard for selecting a line, but your drag-and-drop code is interfering with it, so the third click deselects whatever is selected.
String of text on a line: "This is a test... one two three."
I tripple click on "test" and all of that is selected.
I triple click on "test" text selects then deselects.
Hope this helps!