Steps to reproduce:

Log in as user "Myself"

Go to the Task Board
Switch on Auto Assign

In the "In Progress" list, pick an issue in progress assigned to another user "SomebodyElse"

Drag the issue to the "Done" column

See : Confirmation Dialog, asking whether to Resolve/Close/Cancel

Click on Cancel

See : Issue remains in the "In Progress" Column

Assignee seems to still be "SomebodyElse" - but that's not the case - the assigne has been changed to "MySelf" despite the cancelation

Refresh the Browser

See : Assignee is "Myself"
(Expected : Assigned is "SomebodyElse")

A canceled operation should not change the Database.

Running Greenhopper version 2.3.1-jira37