Drag and Drop Without Initial Selection Does Not Work

When I try to drag with the mouse an unselected file from the Project view or the DITA Maps Manager view, the drag never starts, it only selects the resource. I need to drag the resource again after it becomes selected. As a result any drag and drop without initial selection becomes a two step operation. How can I fix this?

This is a bug present in JVM versions prior to 1.5.0_09. This issue is fixed in 1.5.0_09 and newer versions (including 1.6). See the installation instructions for setting a specific JVM version for running the Oxygen XML Editor application.