Note that I was using 1.4 beta 2 (not the 1.3) in the Release section.

I ran the demo program SwingSet2 using Ferret with the setting of Track Mouse.
I chose the JEditorPaneHTML demo

Part of the text which is displayed is "Do here most humbly"
When I placed the mouse on the D the information was displayed correctly in the Ferret window. As I moved the mouse rightward the mouse had reached the seond e in here before the character under the mouse was reported as the o in Do.