FULL PRODUCT VERSION :
java version "1.8.0_72"
Java(TM) SE Runtime Environment (build 1.8.0_72-b15)
Java HotSpot(TM) 64-Bit Server VM (build 25.72-b15, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Darwin 14.5.0 Darwin Kernel Version 14.5.0: Tue Sep 1 21:23:09 PDT 2015; root:xnu-2782.50.1~1/RELEASE_X86_64 x86_64

A DESCRIPTION OF THE PROBLEM :
When implementing drag & drop where the drag and drop is started to implement MOVE and Link and/or Copy (e.g., TransferMode.ANY or TransferMode.COPY_OR_MOVE), the MOVE actually never gets to the OnDropped.

I'm quite sure this is because when you hold the CMD key (to get drag & drop into MOVE mode), the TransferMode that gets set is null instead of MOVE.

This can be easily verified by running the demo program from http://docs.oracle.com/javafx/2/drag_drop/jfxpub-drag_drop.htm
(just have the System.out.println statements in the event handlers print the transferMode() as well).

As I side node: it actually looks like you are incorrectly handling the keyboard modifiers anyway; CTRL selects LINK mode, while this should have been CMD+ALT.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run the demo program from http://docs.oracle.com/javafx/2/drag_drop/jfxpub-drag_drop.htm and press and hold the CMD modifier: the Move will not get dropped on the target.
For even further identification, extend the already present System.out.println statements with additional info on the events.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The MOVE gesture/modifier key correctly handled and received by target.

(and also correctly handle CMD+ALT as the modifier to get LINK)
ACTUAL -
Move gesture doesn't arrive at target.

REPRODUCIBILITY :
This bug can be reproduced always.

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http://docs.oracle.com/javafx/2/drag_drop/hellodraganddrop.zip
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CUSTOMER SUBMITTED WORKAROUND :
Don't know any :-(