Created attachment 63185 [details]
Example demonstrating the problem
Target is created from dijit.form.MultiSelect. Source is defined in markup on the top of div tag using dojo.dnd.Source (from test_dnd.html example).
Drop some item(s) on the select widget. Behavior of dropped item(s)/option(s) does not differ from the behavior of options defined in markup.
Dropped options cannot be selected using Google Chrome. Actually there is a workaround. One needs to set focus on the select widget and then dropped option can be selected/unselected. Problem is not present in Firefox.
Detected in following browsers:
Google Chrome 5.0.375.125 beta running on Ubuntu 10.04 LTS (Lucid Lynx)
Epiphany 2.30.2 running on Ubuntu 10.04 LTS (Lucid Lynx)
Safari 5.0.1 (7533.17.8) running on Windows XP (Virtualbox)
Problem was originally reported to Dojo developers: http://trac.dojotoolkit.org/ticket/10774