Correction:
The patch on Thunar 1.6.5 worked and the file moves when dragged from the desktop to the file manager as expected.
Dragging from the file manager to the desktop is unaffected by Thunar 1.6.5 + patch and exhibits the previously listed issues.
I'll comment on this once I have xfdesktop4 v4.11.8 installed.
Correction:
The patch on Thunar 1.6.5 worked and the file moves when dragged from the desktop to the file manager as expected.
Dragging from the file manager to the desktop is unaffected by Thunar 1.6.5 + patch and exhibits the previously listed issues.
I'll comment on this once I have xfdesktop4 v4.11.8 installed.